816120120 has 32 divisors (see below), whose sum is σ = 2448360720. Its totient is φ = 217632000.

The previous prime is 816120113. The next prime is 816120133. The reversal of 816120120 is 21021618.

It is a congruent number.

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, 3400381 + ... + 3400620.

Almost surely, 2^816120120 is an apocalyptic number.

It is an amenable number.

816120120 is an abundant number, since it is smaller than the sum of its proper divisors (1632240600).

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

816120120 is a wasteful number, since it uses less digits than its factorization.

816120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6801015 (or 6801011 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 816120120 is about 28567.8161573474. The cubic root of 816120120 is about 934.5115963728.

Adding to 816120120 its reverse (21021618), we get a palindrome (837141738).

The spelling of 816120120 in words is "eight hundred sixteen million, one hundred twenty thousand, one hundred twenty".