82890056 has 16 divisors (see below), whose sum is σ = 155784300. Its totient is φ = 41347584.

The previous prime is 82890047. The next prime is 82890083. The reversal of 82890056 is 65009828.

It can be written as a sum of positive squares in 2 ways, for example, as 81613156 + 1276900 = 9034^2 + 1130^2 .

It is a super-2 number, since 2×82890056² = 13741522767366272, which contains 22 as substring.

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, 8501 + ... + 15428.

Almost surely, 2^82890056 is an apocalyptic number.

It is an amenable number.

82890056 is a deficient number, since it is larger than the sum of its proper divisors (72894244).

82890056 is a wasteful number, since it uses less digits than its factorization.

82890056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24368 (or 24364 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 82890056 is about 9104.3976187335. The cubic root of 82890056 is about 436.0143782257.

The spelling of 82890056 in words is "eighty-two million, eight hundred ninety thousand, fifty-six".