82490815 has 16 divisors (see below), whose sum is σ = 108304416. Its totient is φ = 59817600.

The previous prime is 82490809. The next prime is 82490833. The reversal of 82490815 is 51809428.

It is not a de Polignac number, because 82490815 - 2¹¹ = 82488767 is a prime.

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, 18505 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (6769026).

Almost surely, 2^82490815 is an apocalyptic number.

82490815 is a deficient number, since it is larger than the sum of its proper divisors (25813601).

82490815 is a wasteful number, since it uses less digits than its factorization.

82490815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 82490815 is about 9082.4454306095. The cubic root of 82490815 is about 435.3132284019.

The spelling of 82490815 in words is "eighty-two million, four hundred ninety thousand, eight hundred fifteen".