82990285 has 16 divisors (see below), whose sum is σ = 115747200. Its totient is φ = 55941696.

The previous prime is 82990253. The next prime is 82990319. The reversal of 82990285 is 58209928.

It is a cyclic number.

It is not a de Polignac number, because 82990285 - 2⁵ = 82990253 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, 18030 + ... + 22159.

It is an arithmetic number, because the mean of its divisors is an integer number (7234200).

Almost surely, 2^82990285 is an apocalyptic number.

It is an amenable number.

82990285 is a deficient number, since it is larger than the sum of its proper divisors (32756915).

82990285 is a wasteful number, since it uses less digits than its factorization.

82990285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40260.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 82990285 is about 9109.9003836486. The cubic root of 82990285 is about 436.1900473985.

The spelling of 82990285 in words is "eighty-two million, nine hundred ninety thousand, two hundred eighty-five".