72308901 has 16 divisors (see below), whose sum is σ = 110513664. Its totient is φ = 41196144.

The previous prime is 72308893. The next prime is 72308921. The reversal of 72308901 is 10980327.

It is a happy number.

It is not a de Polignac number, because 72308901 - 2³ = 72308893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72308921) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2326 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (6907104).

Almost surely, 2^72308901 is an apocalyptic number.

It is an amenable number.

72308901 is a deficient number, since it is larger than the sum of its proper divisors (38204763).

72308901 is a wasteful number, since it uses less digits than its factorization.

72308901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 72308901 is about 8503.4640588410. The cubic root of 72308901 is about 416.6108602236.

The spelling of 72308901 in words is "seventy-two million, three hundred eight thousand, nine hundred one".