82455772 has 24 divisors (see below), whose sum is σ = 165970784. Its totient is φ = 35111232.

The previous prime is 82455743. The next prime is 82455803. The reversal of 82455772 is 27755428.

It is a happy number.

It is a super-2 number, since 2×82455772² = 13597908672231968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4983 + ... + 13774.

Almost surely, 2^82455772 is an apocalyptic number.

It is an amenable number.

82455772 is an abundant number, since it is smaller than the sum of its proper divisors (83515012).

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

82455772 is a wasteful number, since it uses less digits than its factorization.

82455772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18925 (or 18923 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 82455772 is about 9080.5160646298. The cubic root of 82455772 is about 435.2515777317.

The spelling of 82455772 in words is "eighty-two million, four hundred fifty-five thousand, seven hundred seventy-two".