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242792928 = 25327831451
BaseRepresentation
bin11100111100010…
…11100111100000
3121220212011021200
432132023213200
5444123333203
640031521200
76005464050
oct1636134740
9556764250
10242792928
11115060a14
1269389200
133b3bb171
1424361560
15164ad9a3
hexe78b9e0

242792928 has 144 divisors (see below), whose sum is σ = 799134336. Its totient is φ = 68486400.

The previous prime is 242792923. The next prime is 242792933. The reversal of 242792928 is 829297242.

It is an interprime number because it is at equal distance from previous prime (242792923) and next prime (242792933).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242792923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166603 + ... + 168053.

It is an arithmetic number, because the mean of its divisors is an integer number (5549544).

Almost surely, 2242792928 is an apocalyptic number.

242792928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242792928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399567168).

242792928 is an abundant number, since it is smaller than the sum of its proper divisors (556341408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242792928 is a wasteful number, since it uses less digits than its factorization.

242792928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1546 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 242792928 is about 15581.8140150626. The cubic root of 242792928 is about 623.8478425851.

It can be divided in two parts, 242 and 792928, that added together give a triangular number (793170 = T1259).

The spelling of 242792928 in words is "two hundred forty-two million, seven hundred ninety-two thousand, nine hundred twenty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 83 84 96 112 126 144 166 168 224 249 252 288 332 336 498 504 581 664 672 747 996 1008 1162 1328 1451 1494 1743 1992 2016 2324 2656 2902 2988 3486 3984 4353 4648 5229 5804 5976 6972 7968 8706 9296 10157 10458 11608 11952 13059 13944 17412 18592 20314 20916 23216 23904 26118 27888 30471 34824 40628 41832 46432 52236 55776 60942 69648 81256 83664 91413 104472 120433 121884 139296 162512 167328 182826 208944 240866 243768 325024 361299 365652 417888 481732 487536 722598 731304 843031 963464 975072 1083897 1445196 1462608 1686062 1926928 2167794 2529093 2890392 2925216 3372124 3853856 4335588 5058186 5780784 6744248 7587279 8671176 10116372 11561568 13488496 15174558 17342352 20232744 26976992 30349116 34684704 40465488 60698232 80930976 121396464 242792928