82318572 has 48 divisors (see below), whose sum is σ = 243909120. Its totient is φ = 23519376.

The previous prime is 82318567. The next prime is 82318591. The reversal of 82318572 is 27581328.

82318572 is a `hidden beast` number, since 82 + 3 + 1 + 8 + 572 = 666.

It is a super-2 number, since 2×82318572² = 13552694592238368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53688 + ... + 55199.

It is an arithmetic number, because the mean of its divisors is an integer number (5081440).

Almost surely, 2^82318572 is an apocalyptic number.

It is an amenable number.

82318572 is an abundant number, since it is smaller than the sum of its proper divisors (161590548).

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

82318572 is a wasteful number, since it uses less digits than its factorization.

82318572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108907 (or 108899 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 82318572 is about 9072.9582827212. The cubic root of 82318572 is about 435.0100354403.

The spelling of 82318572 in words is "eighty-two million, three hundred eighteen thousand, five hundred seventy-two".