72355244 has 12 divisors (see below), whose sum is σ = 136361904. Its totient is φ = 33394704.

The previous prime is 72355187. The next prime is 72355267. The reversal of 72355244 is 44255327.

It is a self number, because there is not a number n which added to its sum of digits gives 72355244.

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, 695672 + ... + 695775.

It is an arithmetic number, because the mean of its divisors is an integer number (11363492).

Almost surely, 2^72355244 is an apocalyptic number.

It is an amenable number.

72355244 is a deficient number, since it is larger than the sum of its proper divisors (64006660).

72355244 is a wasteful number, since it uses less digits than its factorization.

72355244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391464 (or 1391462 counting only the distinct ones).

The product of its digits is 33600, while the sum is 32.

The square root of 72355244 is about 8506.1885706819. The cubic root of 72355244 is about 416.6998436160.

The spelling of 72355244 in words is "seventy-two million, three hundred fifty-five thousand, two hundred forty-four".