82388916 has 18 divisors (see below), whose sum is σ = 208260962. Its totient is φ = 27462960.

The previous prime is 82388909. The next prime is 82388927. The reversal of 82388916 is 61988328.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 33108516 = 7020^2 + 5754^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1144255 + ... + 1144326.

Almost surely, 2^82388916 is an apocalyptic number.

It is an amenable number.

82388916 is an abundant number, since it is smaller than the sum of its proper divisors (125872046).

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

82388916 is a wasteful number, since it uses less digits than its factorization.

82388916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288591 (or 2288586 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 82388916 is about 9076.8340295502. The cubic root of 82388916 is about 435.1339104176.

The spelling of 82388916 in words is "eighty-two million, three hundred eighty-eight thousand, nine hundred sixteen".