83119720 has 16 divisors (see below), whose sum is σ = 187019460. Its totient is φ = 33247872.

The previous prime is 83119709. The next prime is 83119733. The reversal of 83119720 is 2791138.

It can be written as a sum of positive squares in 2 ways, for example, as 80317444 + 2802276 = 8962^2 + 1674^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038957 + ... + 1039036.

Almost surely, 2^83119720 is an apocalyptic number.

It is an amenable number.

83119720 is an abundant number, since it is smaller than the sum of its proper divisors (103899740).

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

83119720 is a wasteful number, since it uses less digits than its factorization.

83119720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078004 (or 2078000 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 83119720 is about 9117.0017001205. The cubic root of 83119720 is about 436.4166961468.

Subtracting from 83119720 its sum of digits (31), we obtain a square (83119689 = 9117²).

The spelling of 83119720 in words is "eighty-three million, one hundred nineteen thousand, seven hundred twenty".