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157388608 = 2613189169
BaseRepresentation
bin10010110000110…
…00111101000000
3101222011011120201
421120120331000
5310242413413
623341214544
73620531626
oct1130307500
9358134521
10157388608
1180929433
1244861454
13267b7c70
1416c8d516
15dc3d9dd
hex9618f40

157388608 has 28 divisors (see below), whose sum is σ = 336344260. Its totient is φ = 72640512.

The previous prime is 157388587. The next prime is 157388617. The reversal of 157388608 is 806883751.

It can be written as a sum of positive squares in 2 ways, for example, as 68425984 + 88962624 = 8272^2 + 9432^2 .

It is a super-4 number, since 4×1573886084 (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93753 + ... + 95416.

It is an arithmetic number, because the mean of its divisors is an integer number (12012295).

Almost surely, 2157388608 is an apocalyptic number.

It is an amenable number.

157388608 is an abundant number, since it is smaller than the sum of its proper divisors (178955652).

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

157388608 is a wasteful number, since it uses less digits than its factorization.

157388608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189194 (or 189184 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 157388608 is about 12545.4616495369. The cubic root of 157388608 is about 539.9138042576.

The spelling of 157388608 in words is "one hundred fifty-seven million, three hundred eighty-eight thousand, six hundred eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 208 416 832 189169 378338 756676 1513352 2459197 3026704 4918394 6053408 9836788 12106816 19673576 39347152 78694304 157388608