386861828 has 12 divisors (see below), whose sum is σ = 683000220. Its totient is φ = 191718912.

The previous prime is 386861807. The next prime is 386861851. The reversal of 386861828 is 828168683.

It can be written as a sum of positive squares in 2 ways, for example, as 139051264 + 247810564 = 11792^2 + 15742^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427493 + ... + 428396.

It is an arithmetic number, because the mean of its divisors is an integer number (56916685).

Almost surely, 2^386861828 is an apocalyptic number.

It is an amenable number.

386861828 is a deficient number, since it is larger than the sum of its proper divisors (296138392).

386861828 is a wasteful number, since it uses less digits than its factorization.

386861828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856006 (or 856004 counting only the distinct ones).

The product of its digits is 884736, while the sum is 50.

The square root of 386861828 is about 19668.8034206456. The cubic root of 386861828 is about 728.6494250253.

The spelling of 386861828 in words is "three hundred eighty-six million, eight hundred sixty-one thousand, eight hundred twenty-eight".