392872816 has 40 divisors (see below), whose sum is σ = 873381600. Its totient is φ = 167706624.

The previous prime is 392872813. The next prime is 392872817. The reversal of 392872816 is 618278293.

It is a super-3 number, since 3×392872816³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392872813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21960 + ... + 35608.

It is an arithmetic number, because the mean of its divisors is an integer number (21834540).

Almost surely, 2^392872816 is an apocalyptic number.

It is an amenable number.

392872816 is an abundant number, since it is smaller than the sum of its proper divisors (480508784).

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

392872816 is a wasteful number, since it uses less digits than its factorization.

392872816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921 (or 13915 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 392872816 is about 19821.0195499626. The cubic root of 392872816 is about 732.4039197287.

The spelling of 392872816 in words is "three hundred ninety-two million, eight hundred seventy-two thousand, eight hundred sixteen".