157909504 has 40 divisors (see below), whose sum is σ = 317457360. Its totient is φ = 78468096.

The previous prime is 157909463. The next prime is 157909517. The reversal of 157909504 is 405909751.

It is a super-2 number, since 2×157909504² = 49870822907052032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90787 + ... + 92509.

It is an arithmetic number, because the mean of its divisors is an integer number (7936434).

Almost surely, 2^157909504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157909504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158728680).

157909504 is an abundant number, since it is smaller than the sum of its proper divisors (159547856).

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

157909504 is an equidigital number, since it uses as much as digits as its factorization.

157909504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 157909504 is about 12566.2048367835. The cubic root of 157909504 is about 540.5087843081.

The spelling of 157909504 in words is "one hundred fifty-seven million, nine hundred nine thousand, five hundred four".