72287979 has 8 divisors (see below), whose sum is σ = 96425472. Its totient is φ = 48171240.

The previous prime is 72287977. The next prime is 72287983. The reversal of 72287979 is 97978227.

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

It is not a de Polignac number, because 72287979 - 2¹ = 72287977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72287977) 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, 7102 + ... + 13964.

It is an arithmetic number, because the mean of its divisors is an integer number (12053184).

Almost surely, 2^72287979 is an apocalyptic number.

72287979 is a deficient number, since it is larger than the sum of its proper divisors (24137493).

72287979 is a wasteful number, since it uses less digits than its factorization.

72287979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10377.

The product of its digits is 889056, while the sum is 51.

The square root of 72287979 is about 8502.2337653113. The cubic root of 72287979 is about 416.5706753451.

The spelling of 72287979 in words is "seventy-two million, two hundred eighty-seven thousand, nine hundred seventy-nine".