157678764 has 48 divisors (see below), whose sum is σ = 377879040. Its totient is φ = 51145920.

The previous prime is 157678753. The next prime is 157678783. The reversal of 157678764 is 467876751.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222042 + ... + 222750.

It is an arithmetic number, because the mean of its divisors is an integer number (7872480).

Almost surely, 2^157678764 is an apocalyptic number.

It is an amenable number.

157678764 is an abundant number, since it is smaller than the sum of its proper divisors (220200276).

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

157678764 is a wasteful number, since it uses less digits than its factorization.

157678764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1188 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The square root of 157678764 is about 12557.0205064737. The cubic root of 157678764 is about 540.2453891582.

It can be divided in two parts, 15767 and 8764, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 157678764 in words is "one hundred fifty-seven million, six hundred seventy-eight thousand, seven hundred sixty-four".