72979652 has 12 divisors (see below), whose sum is σ = 128084880. Its totient is φ = 36383976.

The previous prime is 72979639. The next prime is 72979681. The reversal of 72979652 is 25697927.

It is a happy number.

It is a super-2 number, since 2×72979652² = 10652059212082208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72979597 and 72979606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24902 + ... + 27677.

It is an arithmetic number, because the mean of its divisors is an integer number (10673740).

Almost surely, 2^72979652 is an apocalyptic number.

It is an amenable number.

72979652 is a deficient number, since it is larger than the sum of its proper divisors (55105228).

72979652 is a wasteful number, since it uses less digits than its factorization.

72979652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52930 (or 52928 counting only the distinct ones).

The product of its digits is 476280, while the sum is 47.

The square root of 72979652 is about 8542.8128856952. The cubic root of 72979652 is about 417.8950844342.

The spelling of 72979652 in words is "seventy-two million, nine hundred seventy-nine thousand, six hundred fifty-two".