72232279 has 16 divisors (see below), whose sum is σ = 84750336. Its totient is φ = 60278400.

The previous prime is 72232273. The next prime is 72232289. The reversal of 72232279 is 97223227.

It is not a de Polignac number, because 72232279 - 2⁵ = 72232247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72232273) 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, 78834 + ... + 79744.

It is an arithmetic number, because the mean of its divisors is an integer number (5296896).

Almost surely, 2^72232279 is an apocalyptic number.

72232279 is a deficient number, since it is larger than the sum of its proper divisors (12518057).

72232279 is a wasteful number, since it uses less digits than its factorization.

72232279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206.

The product of its digits is 21168, while the sum is 34.

The square root of 72232279 is about 8498.9575243085. The cubic root of 72232279 is about 416.4636545604.

The spelling of 72232279 in words is "seventy-two million, two hundred thirty-two thousand, two hundred seventy-nine".