82193808 has 20 divisors (see below), whose sum is σ = 212334128. Its totient is φ = 27397920.

The previous prime is 82193731. The next prime is 82193809. The reversal of 82193808 is 80839128.

It is not an unprimeable number, because it can be changed into a prime (82193809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856138 + ... + 856233.

Almost surely, 2^82193808 is an apocalyptic number.

It is an amenable number.

82193808 is an abundant number, since it is smaller than the sum of its proper divisors (130140320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82193808 is a wasteful number, since it uses less digits than its factorization.

82193808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712382 (or 1712376 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 82193808 is about 9066.0800790639. The cubic root of 82193808 is about 434.7901537728.

The spelling of 82193808 in words is "eighty-two million, one hundred ninety-three thousand, eight hundred eight".