816176920 has 64 divisors (see below), whose sum is σ = 2081772000. Its totient is φ = 285493248.

The previous prime is 816176869. The next prime is 816176923. The reversal of 816176920 is 29671618.

816176920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×816176920² = 1332289529481372800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816176923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31425 + ... + 51184.

Almost surely, 2^816176920 is an apocalyptic number.

It is an amenable number.

816176920 is an abundant number, since it is smaller than the sum of its proper divisors (1265595080).

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

816176920 is a wasteful number, since it uses less digits than its factorization.

816176920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82652 (or 82648 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 816176920 is about 28568.8102657426. The cubic root of 816176920 is about 934.5332757907.

The spelling of 816176920 in words is "eight hundred sixteen million, one hundred seventy-six thousand, nine hundred twenty".