157972028 has 24 divisors (see below), whose sum is σ = 281957760. Its totient is φ = 77420720.

The previous prime is 157972013. The next prime is 157972037. The reversal of 157972028 is 820279751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103793 + ... + 105303.

It is an arithmetic number, because the mean of its divisors is an integer number (11748240).

Almost surely, 2^157972028 is an apocalyptic number.

It is an amenable number.

157972028 is a deficient number, since it is larger than the sum of its proper divisors (123985732).

157972028 is a wasteful number, since it uses less digits than its factorization.

157972028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 157972028 is about 12568.6923743085. The cubic root of 157972028 is about 540.5801127399.

The spelling of 157972028 in words is "one hundred fifty-seven million, nine hundred seventy-two thousand, twenty-eight".