157228904 has 16 divisors (see below), whose sum is σ = 336919200. Its totient is φ = 67383792.

The previous prime is 157228879. The next prime is 157228927. The reversal of 157228904 is 409822751.

It is a super-4 number, since 4×157228904⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

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, 1403774 + ... + 1403885.

It is an arithmetic number, because the mean of its divisors is an integer number (21057450).

Almost surely, 2^157228904 is an apocalyptic number.

157228904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

157228904 is an abundant number, since it is smaller than the sum of its proper divisors (179690296).

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

157228904 is a wasteful number, since it uses less digits than its factorization.

157228904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807672 (or 2807668 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 157228904 is about 12539.0950231665. The cubic root of 157228904 is about 539.7311235737.

The spelling of 157228904 in words is "one hundred fifty-seven million, two hundred twenty-eight thousand, nine hundred four".