72804052 has 6 divisors (see below), whose sum is σ = 127407098. Its totient is φ = 36402024.

The previous prime is 72804041. The next prime is 72804077. The reversal of 72804052 is 25040827.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 13883076 = 7676^2 + 3726^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72804052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100503 + ... + 9100510.

Almost surely, 2^72804052 is an apocalyptic number.

It is an amenable number.

72804052 is a deficient number, since it is larger than the sum of its proper divisors (54603046).

72804052 is a wasteful number, since it uses less digits than its factorization.

72804052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18201017 (or 18201015 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 72804052 is about 8532.5290506391. The cubic root of 72804052 is about 417.5596424767.

Adding to 72804052 its reverse (25040827), we get a palindrome (97844879).

The spelling of 72804052 in words is "seventy-two million, eight hundred four thousand, fifty-two".