387656464 has 40 divisors (see below), whose sum is σ = 822147032. Its totient is φ = 175979520.

The previous prime is 387656443. The next prime is 387656471. The reversal of 387656464 is 464656783.

It can be written as a sum of positive squares in 4 ways, for example, as 28174864 + 359481600 = 5308^2 + 18960^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2589 + ... + 27964.

Almost surely, 2^387656464 is an apocalyptic number.

It is an amenable number.

387656464 is an abundant number, since it is smaller than the sum of its proper divisors (434490568).

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

387656464 is a wasteful number, since it uses less digits than its factorization.

387656464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30635 (or 30629 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 49.

The square root of 387656464 is about 19688.9934735120. The cubic root of 387656464 is about 729.1479794910.

The spelling of 387656464 in words is "three hundred eighty-seven million, six hundred fifty-six thousand, four hundred sixty-four".