72301072 has 20 divisors (see below), whose sum is σ = 140464720. Its totient is φ = 36052128.

The previous prime is 72301007. The next prime is 72301093. The reversal of 72301072 is 27010327.

It is an alternating number because its digits alternate between odd and even.

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, 103 + ... + 12025.

It is an arithmetic number, because the mean of its divisors is an integer number (7023236).

Almost surely, 2^72301072 is an apocalyptic number.

It is an amenable number.

72301072 is a deficient number, since it is larger than the sum of its proper divisors (68163648).

72301072 is a wasteful number, since it uses less digits than its factorization.

72301072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12310 (or 12304 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 72301072 is about 8503.0037045740. The cubic root of 72301072 is about 416.5958239736.

Adding to 72301072 its reverse (27010327), we get a palindrome (99311399).

The spelling of 72301072 in words is "seventy-two million, three hundred one thousand, seventy-two".