82204772 has 12 divisors (see below), whose sum is σ = 154924476. Its totient is φ = 37940640.

The previous prime is 82204753. The next prime is 82204781. The reversal of 82204772 is 27740228.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6584356 + 75620416 = 2566^2 + 8696^2 .

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, 790379 + ... + 790482.

It is an arithmetic number, because the mean of its divisors is an integer number (12910373).

Almost surely, 2^82204772 is an apocalyptic number.

It is an amenable number.

82204772 is a deficient number, since it is larger than the sum of its proper divisors (72719704).

82204772 is a wasteful number, since it uses less digits than its factorization.

82204772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580878 (or 1580876 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 82204772 is about 9066.6847303742. The cubic root of 82204772 is about 434.8094854290.

The spelling of 82204772 in words is "eighty-two million, two hundred four thousand, seven hundred seventy-two".