82915972 has 6 divisors (see below), whose sum is σ = 145102958. Its totient is φ = 41457984.

The previous prime is 82915969. The next prime is 82915991. The reversal of 82915972 is 27951928.

It can be written as a sum of positive squares in only one way, i.e., 68657796 + 14258176 = 8286^2 + 3776^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10364493 + ... + 10364500.

Almost surely, 2^82915972 is an apocalyptic number.

It is an amenable number.

82915972 is a deficient number, since it is larger than the sum of its proper divisors (62186986).

82915972 is a wasteful number, since it uses less digits than its factorization.

82915972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20728997 (or 20728995 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 82915972 is about 9105.8207757456. The cubic root of 82915972 is about 436.0598141993.

The spelling of 82915972 in words is "eighty-two million, nine hundred fifteen thousand, nine hundred seventy-two".