73920931 has 16 divisors (see below), whose sum is σ = 87168960. Its totient is φ = 61361280.

The previous prime is 73920929. The next prime is 73920949. The reversal of 73920931 is 13902937.

It is a cyclic number.

It is not a de Polignac number, because 73920931 - 2¹ = 73920929 is a prime.

It is a super-2 number, since 2×73920931² = 10928608079813522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73920911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69141 + ... + 70201.

It is an arithmetic number, because the mean of its divisors is an integer number (5448060).

Almost surely, 2^73920931 is an apocalyptic number.

73920931 is a deficient number, since it is larger than the sum of its proper divisors (13248029).

73920931 is a wasteful number, since it uses less digits than its factorization.

73920931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 73920931 is about 8597.7282464614. The cubic root of 73920931 is about 419.6840613413.

The spelling of 73920931 in words is "seventy-three million, nine hundred twenty thousand, nine hundred thirty-one".