387894128 has 40 divisors (see below), whose sum is σ = 760799520. Its totient is φ = 191575040.

The previous prime is 387894113. The next prime is 387894167. The reversal of 387894128 is 821498783.

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, 681428 + ... + 681996.

It is an arithmetic number, because the mean of its divisors is an integer number (19019988).

Almost surely, 2^387894128 is an apocalyptic number.

It is an amenable number.

387894128 is a deficient number, since it is larger than the sum of its proper divisors (372905392).

387894128 is a wasteful number, since it uses less digits than its factorization.

387894128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1019 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 387894128 is about 19695.0280020111. The cubic root of 387894128 is about 729.2969574647.

The spelling of 387894128 in words is "three hundred eighty-seven million, eight hundred ninety-four thousand, one hundred twenty-eight".