157842028 has 24 divisors (see below), whose sum is σ = 280594160. Its totient is φ = 77682240.

The previous prime is 157842023. The next prime is 157842029. The reversal of 157842028 is 820248751.

157842028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

157842028 is a nontrivial binomial coefficient, being equal to C(17768, 2).

It is not an unprimeable number, because it can be changed into a prime (157842023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69958 + ... + 72178.

Almost surely, 2^157842028 is an apocalyptic number.

157842028 is the 17767-th triangular number and also the 8884-th hexagonal number.

157842028 is the 5923-rd centered nonagonal number.

It is an amenable number.

157842028 is a deficient number, since it is larger than the sum of its proper divisors (122752132).

157842028 is a wasteful number, since it uses less digits than its factorization.

157842028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 157842028 is about 12563.5197297573. The cubic root of 157842028 is about 540.4317854240.

The spelling of 157842028 in words is "one hundred fifty-seven million, eight hundred forty-two thousand, twenty-eight".