82817992 has 16 divisors (see below), whose sum is σ = 157830300. Its totient is φ = 40729920.

The previous prime is 82817947. The next prime is 82818011. The reversal of 82817992 is 29971828.

It can be written as a sum of positive squares in 2 ways, for example, as 80174116 + 2643876 = 8954^2 + 1626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84367 + ... + 85342.

Almost surely, 2^82817992 is an apocalyptic number.

It is an amenable number.

82817992 is a deficient number, since it is larger than the sum of its proper divisors (75012308).

82817992 is a wasteful number, since it uses less digits than its factorization.

82817992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169776 (or 169772 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 82817992 is about 9100.4391102847. The cubic root of 82817992 is about 435.8879857014.

The spelling of 82817992 in words is "eighty-two million, eight hundred seventeen thousand, nine hundred ninety-two".