83800520 has 32 divisors (see below), whose sum is σ = 189355320. Its totient is φ = 33377280.

The previous prime is 83800513. The next prime is 83800529. The reversal of 83800520 is 2500838.

It can be written as a sum of positive squares in 4 ways, for example, as 56280004 + 27520516 = 7502^2 + 5246^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83800520.

It is not an unprimeable number, because it can be changed into a prime (83800529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5294 + ... + 13986.

Almost surely, 2^83800520 is an apocalyptic number.

It is an amenable number.

83800520 is an abundant number, since it is smaller than the sum of its proper divisors (105554800).

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

83800520 is a wasteful number, since it uses less digits than its factorization.

83800520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8945 (or 8941 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 83800520 is about 9154.2623951906. The cubic root of 83800520 is about 437.6049620271.

The spelling of 83800520 in words is "eighty-three million, eight hundred thousand, five hundred twenty".