82507380 has 48 divisors (see below), whose sum is σ = 234818304. Its totient is φ = 21640320.

The previous prime is 82507339. The next prime is 82507391. The reversal of 82507380 is 8370528.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7612 + ... + 14931.

It is an arithmetic number, because the mean of its divisors is an integer number (4892048).

Almost surely, 2^82507380 is an apocalyptic number.

It is an amenable number.

82507380 is an abundant number, since it is smaller than the sum of its proper divisors (152310924).

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

82507380 is a wasteful number, since it uses less digits than its factorization.

82507380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22616 (or 22614 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 82507380 is about 9083.3573088369. The cubic root of 82507380 is about 435.3423649024.

The spelling of 82507380 in words is "eighty-two million, five hundred seven thousand, three hundred eighty".