386878870 has 64 divisors (see below), whose sum is σ = 821270016. Its totient is φ = 128459520.

The previous prime is 386878861. The next prime is 386878901. The reversal of 386878870 is 78878683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467397 + ... + 468223.

It is an arithmetic number, because the mean of its divisors is an integer number (12832344).

Almost surely, 2^386878870 is an apocalyptic number.

386878870 is an abundant number, since it is smaller than the sum of its proper divisors (434391146).

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

386878870 is a wasteful number, since it uses less digits than its factorization.

386878870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 386878870 is about 19669.2366399919. The cubic root of 386878870 is about 728.6601243330.

The spelling of 386878870 in words is "three hundred eighty-six million, eight hundred seventy-eight thousand, eight hundred seventy".