82893581 has 12 divisors (see below), whose sum is σ = 88994388. Its totient is φ = 77187072.

The previous prime is 82893563. The next prime is 82893583. The reversal of 82893581 is 18539828.

It can be written as a sum of positive squares in 6 ways, for example, as 828100 + 82065481 = 910^2 + 9059^2 .

It is not a de Polignac number, because 82893581 - 2²² = 78699277 is a prime.

It is a super-2 number, since 2×82893581² = 13742691542007122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82893583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26555 + ... + 29511.

It is an arithmetic number, because the mean of its divisors is an integer number (7416199).

Almost surely, 2^82893581 is an apocalyptic number.

It is an amenable number.

82893581 is a deficient number, since it is larger than the sum of its proper divisors (6100807).

82893581 is a wasteful number, since it uses less digits than its factorization.

82893581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088 (or 3071 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 82893581 is about 9104.5912044419. The cubic root of 82893581 is about 436.0205588179.

The spelling of 82893581 in words is "eighty-two million, eight hundred ninety-three thousand, five hundred eighty-one".