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157033769 = 659238291
BaseRepresentation
bin10010101110000…
…10010100101001
3101221111010211112
421113002110221
5310200040034
623325440105
73614523254
oct1127022451
9357433745
10157033769
1180706882
1244710035
13266c25b9
1416bda09b
15dbbd7ce
hex95c2529

157033769 has 4 divisors (see below), whose sum is σ = 157272720. Its totient is φ = 156794820.

The previous prime is 157033763. The next prime is 157033783. The reversal of 157033769 is 967330751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967330751 = 2394047409.

It is a cyclic number.

It is not a de Polignac number, because 157033769 - 216 = 156968233 is a prime.

It is a super-2 number, since 2×1570337692 = 49319209212690722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157033763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118487 + ... + 119804.

It is an arithmetic number, because the mean of its divisors is an integer number (39318180).

Almost surely, 2157033769 is an apocalyptic number.

It is an amenable number.

157033769 is a deficient number, since it is larger than the sum of its proper divisors (238951).

157033769 is an equidigital number, since it uses as much as digits as its factorization.

157033769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238950.

The product of its (nonzero) digits is 119070, while the sum is 41.

The square root of 157033769 is about 12531.3115434898. The cubic root of 157033769 is about 539.5077464235.

The spelling of 157033769 in words is "one hundred fifty-seven million, thirty-three thousand, seven hundred sixty-nine".

Divisors: 1 659 238291 157033769