82315518 has 16 divisors (see below), whose sum is σ = 168134400. Its totient is φ = 26854616.

The previous prime is 82315517. The next prime is 82315537. The reversal of 82315518 is 81551328.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82315511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145668 + ... + 146231.

It is an arithmetic number, because the mean of its divisors is an integer number (10508400).

Almost surely, 2^82315518 is an apocalyptic number.

82315518 is an abundant number, since it is smaller than the sum of its proper divisors (85818882).

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

82315518 is a wasteful number, since it uses less digits than its factorization.

82315518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291951.

The product of its digits is 9600, while the sum is 33.

The square root of 82315518 is about 9072.7899788323. The cubic root of 82315518 is about 435.0046557832.

The spelling of 82315518 in words is "eighty-two million, three hundred fifteen thousand, five hundred eighteen".