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252760420 = 2251117193557
BaseRepresentation
bin11110001000011…
…01000101100100
3122121121120010001
433010031011210
51004201313140
641025311044
76156266563
oct1704150544
9577546101
10252760420
1111a749710
1270795484
134049aca3
14257d7bda
15172cbe9a
hexf10d164

252760420 has 96 divisors (see below), whose sum is σ = 645563520. Its totient is φ = 81930240.

The previous prime is 252760411. The next prime is 252760463. The reversal of 252760420 is 24067252.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69282 + ... + 72838.

It is an arithmetic number, because the mean of its divisors is an integer number (6724620).

Almost surely, 2252760420 is an apocalyptic number.

252760420 is a gapful number since it is divisible by the number (20) 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 252760420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322781760).

252760420 is an abundant number, since it is smaller than the sum of its proper divisors (392803100).

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

252760420 is a wasteful number, since it uses less digits than its factorization.

252760420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613 (or 3611 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 252760420 is about 15898.4408040537. The cubic root of 252760420 is about 632.2706506493.

The spelling of 252760420 in words is "two hundred fifty-two million, seven hundred sixty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 17 19 20 22 34 38 44 55 68 76 85 95 110 170 187 190 209 220 323 340 374 380 418 646 748 836 935 1045 1292 1615 1870 2090 3230 3553 3557 3740 4180 6460 7106 7114 14212 14228 17765 17785 35530 35570 39127 60469 67583 71060 71140 78254 120938 135166 156508 195635 241876 270332 302345 337915 391270 604690 665159 675830 743413 782540 1148911 1209380 1330318 1351660 1486826 2297822 2660636 2973652 3325795 3717065 4595644 5744555 6651590 7434130 11489110 12638021 13303180 14868260 22978220 25276042 50552084 63190105 126380210 252760420