72824272 has 10 divisors (see below), whose sum is σ = 141097058. Its totient is φ = 36412128.

The previous prime is 72824267. The next prime is 72824287. The reversal of 72824272 is 27242827.

It can be written as a sum of positive squares in only one way, i.e., 70963776 + 1860496 = 8424^2 + 1364^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2275743 + ... + 2275774.

Almost surely, 2^72824272 is an apocalyptic number.

It is an amenable number.

72824272 is a deficient number, since it is larger than the sum of its proper divisors (68272786).

72824272 is a wasteful number, since it uses less digits than its factorization.

72824272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551525 (or 4551519 counting only the distinct ones).

The product of its digits is 25088, while the sum is 34.

The square root of 72824272 is about 8533.7138456829. The cubic root of 72824272 is about 417.5982954281.

The spelling of 72824272 in words is "seventy-two million, eight hundred twenty-four thousand, two hundred seventy-two".