387631680 has 56 divisors (see below), whose sum is σ = 1230733632. Its totient is φ = 103368192.

The previous prime is 387631667. The next prime is 387631681. The reversal of 387631680 is 86136783.

It is not an unprimeable number, because it can be changed into a prime (387631681) 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, 200932 + ... + 202851.

Almost surely, 2^387631680 is an apocalyptic number.

387631680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387631680 is an abundant number, since it is smaller than the sum of its proper divisors (843101952).

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

387631680 is a wasteful number, since it uses less digits than its factorization.

387631680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403803 (or 403793 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 387631680 is about 19688.3640762761. The cubic root of 387631680 is about 729.1324403127.

The spelling of 387631680 in words is "three hundred eighty-seven million, six hundred thirty-one thousand, six hundred eighty".