82490385 has 16 divisors (see below), whose sum is σ = 132128640. Its totient is φ = 43946880.

The previous prime is 82490377. The next prime is 82490393. The reversal of 82490385 is 58309428.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82490377) and next prime (82490393).

It is not a de Polignac number, because 82490385 - 2³ = 82490377 is a prime.

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, 14500 + ... + 19370.

It is an arithmetic number, because the mean of its divisors is an integer number (8258040).

Almost surely, 2^82490385 is an apocalyptic number.

It is an amenable number.

82490385 is a deficient number, since it is larger than the sum of its proper divisors (49638255).

82490385 is a wasteful number, since it uses less digits than its factorization.

82490385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 82490385 is about 9082.4217585400. The cubic root of 82490385 is about 435.3124720146.

The spelling of 82490385 in words is "eighty-two million, four hundred ninety thousand, three hundred eighty-five".