3865586628 has 24 divisors (see below), whose sum is σ = 9211612032. Its totient is φ = 1261113184.

The previous prime is 3865586597. The next prime is 3865586663. The reversal of 3865586628 is 8266855683.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3426375 + ... + 3427502.

It is an arithmetic number, because the mean of its divisors is an integer number (383817168).

Almost surely, 2^3865586628 is an apocalyptic number.

It is an amenable number.

3865586628 is an abundant number, since it is smaller than the sum of its proper divisors (5346025404).

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

3865586628 is a wasteful number, since it uses less digits than its factorization.

3865586628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853931 (or 6853929 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 57.

The square root of 3865586628 is about 62173.8419916286. The cubic root of 3865586628 is about 1569.4174245948.

The spelling of 3865586628 in words is "three billion, eight hundred sixty-five million, five hundred eighty-six thousand, six hundred twenty-eight".