386691172 has 48 divisors (see below), whose sum is σ = 797384448. Its totient is φ = 160634880.

The previous prime is 386691161. The next prime is 386691187. The reversal of 386691172 is 271196683.

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, 190708 + ... + 192724.

It is an arithmetic number, because the mean of its divisors is an integer number (16612176).

Almost surely, 2^386691172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386691172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398692224).

386691172 is an abundant number, since it is smaller than the sum of its proper divisors (410693276).

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

386691172 is a wasteful number, since it uses less digits than its factorization.

386691172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236 (or 2234 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 386691172 is about 19664.4647015880. The cubic root of 386691172 is about 728.5422664514.

The spelling of 386691172 in words is "three hundred eighty-six million, six hundred ninety-one thousand, one hundred seventy-two".