387057930 has 64 divisors (see below), whose sum is σ = 1117532160. Its totient is φ = 83813184.

The previous prime is 387057791. The next prime is 387057941. The reversal of 387057930 is 39750783.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44514 + ... + 52493.

It is an arithmetic number, because the mean of its divisors is an integer number (17461440).

Almost surely, 2^387057930 is an apocalyptic number.

387057930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

387057930 is an abundant number, since it is smaller than the sum of its proper divisors (730474230).

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

387057930 is a wasteful number, since it uses less digits than its factorization.

387057930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97043.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 387057930 is about 19673.7878915068. The cubic root of 387057930 is about 728.7725227846.

The spelling of 387057930 in words is "three hundred eighty-seven million, fifty-seven thousand, nine hundred thirty".