82816990 has 16 divisors (see below), whose sum is σ = 149217552. Its totient is φ = 33094144.

The previous prime is 82816957. The next prime is 82817017. The reversal of 82816990 is 9961828.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8382 + ... + 15358.

It is an arithmetic number, because the mean of its divisors is an integer number (9326097).

Almost surely, 2^82816990 is an apocalyptic number.

82816990 is a deficient number, since it is larger than the sum of its proper divisors (66400562).

82816990 is a wasteful number, since it uses less digits than its factorization.

82816990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 82816990 is about 9100.3840578296. The cubic root of 82816990 is about 435.8862277842.

The spelling of 82816990 in words is "eighty-two million, eight hundred sixteen thousand, nine hundred ninety".