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30377952 = 25321143223
BaseRepresentation
bin111001111100…
…0011111100000
32010011100201100
41303320133200
530234043302
63003034400
7516131313
oct163703740
963140640
1030377952
1116169450
12a20ba00
1363a8027
14406a97a
152a00d1c
hex1cf87e0

30377952 has 144 divisors (see below), whose sum is σ = 96864768. Its totient is φ = 8951040.

The previous prime is 30377951. The next prime is 30377953. The reversal of 30377952 is 25977303.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30377951) and next prime (30377953).

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30377951) 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, 136113 + ... + 136335.

It is an arithmetic number, because the mean of its divisors is an integer number (672672).

Almost surely, 230377952 is an apocalyptic number.

30377952 is a gapful number since it is divisible by the number (32) 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 30377952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48432384).

30377952 is an abundant number, since it is smaller than the sum of its proper divisors (66486816).

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

30377952 is a wasteful number, since it uses less digits than its factorization.

30377952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 30377952 is about 5511.6197256342. The cubic root of 30377952 is about 312.0226807969.

It can be divided in two parts, 30377 and 952, that added together give a square (31329 = 1772).

The spelling of 30377952 in words is "thirty million, three hundred seventy-seven thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 32 33 36 43 44 48 66 72 86 88 96 99 129 132 144 172 176 198 223 258 264 288 344 352 387 396 446 473 516 528 669 688 774 792 892 946 1032 1056 1338 1376 1419 1548 1584 1784 1892 2007 2064 2453 2676 2838 3096 3168 3568 3784 4014 4128 4257 4906 5352 5676 6192 7136 7359 7568 8028 8514 9589 9812 10704 11352 12384 14718 15136 16056 17028 19178 19624 21408 22077 22704 28767 29436 32112 34056 38356 39248 44154 45408 57534 58872 64224 68112 76712 78496 86301 88308 105479 115068 117744 136224 153424 172602 176616 210958 230136 235488 306848 316437 345204 353232 421916 460272 632874 690408 706464 843832 920544 949311 1265748 1380816 1687664 1898622 2531496 2761632 3375328 3797244 5062992 7594488 10125984 15188976 30377952