72279267 has 4 divisors (see below), whose sum is σ = 96372360. Its totient is φ = 48186176.

The previous prime is 72279209. The next prime is 72279283. The reversal of 72279267 is 76297227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76297227 = 3 ⋅25432409.

It is a cyclic number.

It is not a de Polignac number, because 72279267 - 2⁶ = 72279203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72279367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12046542 + ... + 12046547.

It is an arithmetic number, because the mean of its divisors is an integer number (24093090).

Almost surely, 2^72279267 is an apocalyptic number.

72279267 is a deficient number, since it is larger than the sum of its proper divisors (24093093).

72279267 is a wasteful number, since it uses less digits than its factorization.

72279267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24093092.

The product of its digits is 148176, while the sum is 42.

The square root of 72279267 is about 8501.7214139255. The cubic root of 72279267 is about 416.5539399230.

The spelling of 72279267 in words is "seventy-two million, two hundred seventy-nine thousand, two hundred sixty-seven".