83457320 has 16 divisors (see below), whose sum is σ = 187779060. Its totient is φ = 33382912.

The previous prime is 83457313. The next prime is 83457337. The reversal of 83457320 is 2375438.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 81613156 + 1844164 = 9034^2 + 1358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043177 + ... + 1043256.

Almost surely, 2^83457320 is an apocalyptic number.

It is an amenable number.

83457320 is an abundant number, since it is smaller than the sum of its proper divisors (104321740).

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

83457320 is a wasteful number, since it uses less digits than its factorization.

83457320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086444 (or 2086440 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 83457320 is about 9135.4977970552. The cubic root of 83457320 is about 437.0067496824.

The spelling of 83457320 in words is "eighty-three million, four hundred fifty-seven thousand, three hundred twenty".