386688290 has 32 divisors (see below), whose sum is σ = 739031040. Its totient is φ = 145172224.

The previous prime is 386688241. The next prime is 386688311. The reversal of 386688290 is 92886683.

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, 62141 + ... + 68079.

It is an arithmetic number, because the mean of its divisors is an integer number (23094720).

Almost surely, 2^386688290 is an apocalyptic number.

386688290 is a deficient number, since it is larger than the sum of its proper divisors (352342750).

386688290 is a wasteful number, since it uses less digits than its factorization.

386688290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 386688290 is about 19664.3914220603. The cubic root of 386688290 is about 728.5404565110.

The spelling of 386688290 in words is "three hundred eighty-six million, six hundred eighty-eight thousand, two hundred ninety".