387922878 has 32 divisors (see below), whose sum is σ = 985201920. Its totient is φ = 110835000.

The previous prime is 387922849. The next prime is 387922883. The reversal of 387922878 is 878229783.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512748 + ... + 513503.

It is an arithmetic number, because the mean of its divisors is an integer number (30787560).

Almost surely, 2^387922878 is an apocalyptic number.

387922878 is an abundant number, since it is smaller than the sum of its proper divisors (597279042).

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

387922878 is a wasteful number, since it uses less digits than its factorization.

387922878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026269 (or 1026263 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 387922878 is about 19695.7578681299. The cubic root of 387922878 is about 729.3149750697.

The spelling of 387922878 in words is "three hundred eighty-seven million, nine hundred twenty-two thousand, eight hundred seventy-eight".