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157929280 = 2652112339
BaseRepresentation
bin10010110100111…
…00111101000000
3102000011122020121
421122130331000
5310412214110
623400550024
73625243135
oct1132347500
9360148217
10157929280
1181168673
1244a82314
13269470a2
1416d9058c
15dce8cda
hex969cf40

157929280 has 56 divisors (see below), whose sum is σ = 378012960. Its totient is φ = 62845440.

The previous prime is 157929271. The next prime is 157929307. The reversal of 157929280 is 82929751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66351 + ... + 68689.

Almost surely, 2157929280 is an apocalyptic number.

157929280 is a gapful number since it is divisible by the number (10) 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 157929280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189006480).

157929280 is an abundant number, since it is smaller than the sum of its proper divisors (220083680).

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

157929280 is a wasteful number, since it uses less digits than its factorization.

157929280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567 (or 2557 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 157929280 is about 12566.9916845679. The cubic root of 157929280 is about 540.5313471373.

The spelling of 157929280 in words is "one hundred fifty-seven million, nine hundred twenty-nine thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 211 320 422 844 1055 1688 2110 2339 3376 4220 4678 6752 8440 9356 11695 13504 16880 18712 23390 33760 37424 46780 67520 74848 93560 149696 187120 374240 493529 748480 987058 1974116 2467645 3948232 4935290 7896464 9870580 15792928 19741160 31585856 39482320 78964640 157929280