82973556 has 36 divisors (see below), whose sum is σ = 210441504. Its totient is φ = 27565200.

The previous prime is 82973521. The next prime is 82973563. The reversal of 82973556 is 65537928.

It is a happy number.

82973556 is a `hidden beast` number, since 8 + 2 + 97 + 3 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×82973556² = 13769221990570272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7491 + ... + 14901.

Almost surely, 2^82973556 is an apocalyptic number.

It is an amenable number.

82973556 is an abundant number, since it is smaller than the sum of its proper divisors (127467948).

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

82973556 is a wasteful number, since it uses less digits than its factorization.

82973556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732 (or 7727 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 82973556 is about 9108.9821604831. The cubic root of 82973556 is about 436.1607366839.

The spelling of 82973556 in words is "eighty-two million, nine hundred seventy-three thousand, five hundred fifty-six".