157928687 has 8 divisors (see below), whose sum is σ = 182088096. Its totient is φ = 134168832.

The previous prime is 157928681. The next prime is 157928699. The reversal of 157928687 is 786829751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157928687 - 2⁴ = 157928671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157928681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99038 + ... + 100619.

It is an arithmetic number, because the mean of its divisors is an integer number (22761012).

Almost surely, 2^157928687 is an apocalyptic number.

157928687 is a deficient number, since it is larger than the sum of its proper divisors (24159409).

157928687 is a wasteful number, since it uses less digits than its factorization.

157928687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199777.

The product of its digits is 1693440, while the sum is 53.

The square root of 157928687 is about 12566.9680909916. The cubic root of 157928687 is about 540.5306705993.

The spelling of 157928687 in words is "one hundred fifty-seven million, nine hundred twenty-eight thousand, six hundred eighty-seven".