82390988 has 6 divisors (see below), whose sum is σ = 144184236. Its totient is φ = 41195492.

The previous prime is 82390981. The next prime is 82391003. The reversal of 82390988 is 88909328.

It is a happy number.

It is a super-2 number, since 2×82390988² = 13576549807232288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82390981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10298870 + ... + 10298877.

It is an arithmetic number, because the mean of its divisors is an integer number (24030706).

Almost surely, 2^82390988 is an apocalyptic number.

It is an amenable number.

82390988 is a deficient number, since it is larger than the sum of its proper divisors (61793248).

82390988 is a wasteful number, since it uses less digits than its factorization.

82390988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20597751 (or 20597749 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 82390988 is about 9076.9481655455. The cubic root of 82390988 is about 435.1375581167.

The spelling of 82390988 in words is "eighty-two million, three hundred ninety thousand, nine hundred eighty-eight".