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157156680 = 23351309639
BaseRepresentation
bin10010101111000…
…00010101001000
3101221201101102210
421113200111020
5310213003210
623332225120
73615544512
oct1127402510
9357641383
10157156680
118079015a
124476b1a0
1326736525
1416c2cbb2
15dbe4e20
hex95e0548

157156680 has 32 divisors (see below), whose sum is σ = 471470400. Its totient is φ = 41908416.

The previous prime is 157156669. The next prime is 157156691. The reversal of 157156680 is 86651751.

It is an interprime number because it is at equal distance from previous prime (157156669) and next prime (157156691).

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 7 ways as a sum of consecutive naturals, for example, 654700 + ... + 654939.

It is an arithmetic number, because the mean of its divisors is an integer number (14733450).

Almost surely, 2157156680 is an apocalyptic number.

157156680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157156680 is an abundant number, since it is smaller than the sum of its proper divisors (314313720).

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

157156680 is a wasteful number, since it uses less digits than its factorization.

157156680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309653 (or 1309649 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 157156680 is about 12536.2147397051. The cubic root of 157156680 is about 539.6484680526.

The spelling of 157156680 in words is "one hundred fifty-seven million, one hundred fifty-six thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1309639 2619278 3928917 5238556 6548195 7857834 10477112 13096390 15715668 19644585 26192780 31431336 39289170 52385560 78578340 157156680