83912320 has 32 divisors (see below), whose sum is σ = 200604420. Its totient is φ = 33564672.

The previous prime is 83912293. The next prime is 83912321. The reversal of 83912320 is 2321938.

It can be written as a sum of positive squares in 2 ways, for example, as 79281216 + 4631104 = 8904^2 + 2152^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (83912321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64917 + ... + 66196.

Almost surely, 2^83912320 is an apocalyptic number.

83912320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83912320 is an abundant number, since it is smaller than the sum of its proper divisors (116692100).

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

83912320 is a wasteful number, since it uses less digits than its factorization.

83912320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131132 (or 131120 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 83912320 is about 9160.3668048829. The cubic root of 83912320 is about 437.7994814800.

The spelling of 83912320 in words is "eighty-three million, nine hundred twelve thousand, three hundred twenty".