387881240 has 32 divisors (see below), whose sum is σ = 873450000. Its totient is φ = 155025024.

The previous prime is 387881239. The next prime is 387881261. The reversal of 387881240 is 42188783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56726 + ... + 63194.

Almost surely, 2^387881240 is an apocalyptic number.

It is an amenable number.

387881240 is an abundant number, since it is smaller than the sum of its proper divisors (485568760).

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

387881240 is a wasteful number, since it uses less digits than its factorization.

387881240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979 (or 7975 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 387881240 is about 19694.7008101164. The cubic root of 387881240 is about 729.2888802751.

The spelling of 387881240 in words is "three hundred eighty-seven million, eight hundred eighty-one thousand, two hundred forty".