82471972 has 24 divisors (see below), whose sum is σ = 158501952. Its totient is φ = 37236000.

The previous prime is 82471957. The next prime is 82471999. The reversal of 82471972 is 27917428.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438 + ... + 12850.

It is an arithmetic number, because the mean of its divisors is an integer number (6604248).

Almost surely, 2^82471972 is an apocalyptic number.

It is an amenable number.

82471972 is a deficient number, since it is larger than the sum of its proper divisors (76029980).

82471972 is a wasteful number, since it uses less digits than its factorization.

82471972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579 (or 12577 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 82471972 is about 9081.4080406069. The cubic root of 82471972 is about 435.2800803405.

The spelling of 82471972 in words is "eighty-two million, four hundred seventy-one thousand, nine hundred seventy-two".