72923961 has 16 divisors (see below), whose sum is σ = 110684160. Its totient is φ = 42274320.

The previous prime is 72923959. The next prime is 72923969. The reversal of 72923961 is 16932927.

It is not a de Polignac number, because 72923961 - 2¹ = 72923959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72923969) 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, 47281 + ... + 48798.

It is an arithmetic number, because the mean of its divisors is an integer number (6917760).

Almost surely, 2^72923961 is an apocalyptic number.

It is an amenable number.

72923961 is a deficient number, since it is larger than the sum of its proper divisors (37760199).

72923961 is a wasteful number, since it uses less digits than its factorization.

72923961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96116.

The product of its digits is 40824, while the sum is 39.

The square root of 72923961 is about 8539.5527400444. The cubic root of 72923961 is about 417.7887583697.

The spelling of 72923961 in words is "seventy-two million, nine hundred twenty-three thousand, nine hundred sixty-one".