72904279 has 16 divisors (see below), whose sum is σ = 88473600. Its totient is φ = 58644864.

The previous prime is 72904267. The next prime is 72904283. The reversal of 72904279 is 97240927.

It is a cyclic number.

It is not a de Polignac number, because 72904279 - 2¹⁵ = 72871511 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 (72904259) 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, 56362 + ... + 57640.

It is an arithmetic number, because the mean of its divisors is an integer number (5529600).

Almost surely, 2^72904279 is an apocalyptic number.

72904279 is a deficient number, since it is larger than the sum of its proper divisors (15569321).

72904279 is a wasteful number, since it uses less digits than its factorization.

72904279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 72904279 is about 8538.4002600019. The cubic root of 72904279 is about 417.7511682638.

The spelling of 72904279 in words is "seventy-two million, nine hundred four thousand, two hundred seventy-nine".