72283971 has 8 divisors (see below), whose sum is σ = 99487744. Its totient is φ = 46634760.

The previous prime is 72283969. The next prime is 72283987. The reversal of 72283971 is 17938227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72283971 - 2¹ = 72283969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72283901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388531 + ... + 388716.

It is an arithmetic number, because the mean of its divisors is an integer number (12435968).

Almost surely, 2^72283971 is an apocalyptic number.

72283971 is a deficient number, since it is larger than the sum of its proper divisors (27203773).

72283971 is a wasteful number, since it uses less digits than its factorization.

72283971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777281.

The product of its digits is 42336, while the sum is 39.

The square root of 72283971 is about 8501.9980592799. The cubic root of 72283971 is about 416.5629762959.

The spelling of 72283971 in words is "seventy-two million, two hundred eighty-three thousand, nine hundred seventy-one".