82471894 has 24 divisors (see below), whose sum is σ = 131947920. Its totient is φ = 38651472.

The previous prime is 82471861. The next prime is 82471901. The reversal of 82471894 is 49817428.

It is a super-2 number, since 2×82471894² = 13603226599894472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82471894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73812 + ... + 74920.

It is an arithmetic number, because the mean of its divisors is an integer number (5497830).

Almost surely, 2^82471894 is an apocalyptic number.

82471894 is a deficient number, since it is larger than the sum of its proper divisors (49476026).

82471894 is a wasteful number, since it uses less digits than its factorization.

82471894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1233 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 82471894 is about 9081.4037461177. The cubic root of 82471894 is about 435.2799431147.

The spelling of 82471894 in words is "eighty-two million, four hundred seventy-one thousand, eight hundred ninety-four".