82293921 has 24 divisors (see below), whose sum is σ = 128686560. Its totient is φ = 51968952.

The previous prime is 82293917. The next prime is 82293949. The reversal of 82293921 is 12939228.

It is not a de Polignac number, because 82293921 - 2² = 82293917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82293961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5526 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (5361940).

Almost surely, 2^82293921 is an apocalyptic number.

It is an amenable number.

82293921 is a deficient number, since it is larger than the sum of its proper divisors (46392639).

82293921 is a wasteful number, since it uses less digits than its factorization.

82293921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8490 (or 8465 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 82293921 is about 9071.5996935491. The cubic root of 82293921 is about 434.9666086141.

The spelling of 82293921 in words is "eighty-two million, two hundred ninety-three thousand, nine hundred twenty-one".