72539259 has 16 divisors (see below), whose sum is σ = 105138432. Its totient is φ = 44219808.

The previous prime is 72539249. The next prime is 72539279. The reversal of 72539259 is 95293527.

It is not a de Polignac number, because 72539259 - 2⁵ = 72539227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72539259.

It is not an unprimeable number, because it can be changed into a prime (72539239) 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, 4519 + ... + 12864.

It is an arithmetic number, because the mean of its divisors is an integer number (6571152).

Almost surely, 2^72539259 is an apocalyptic number.

72539259 is a deficient number, since it is larger than the sum of its proper divisors (32599173).

72539259 is a wasteful number, since it uses less digits than its factorization.

72539259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17506.

The product of its digits is 170100, while the sum is 42.

The square root of 72539259 is about 8516.9982388163. The cubic root of 72539259 is about 417.0527971151.

The spelling of 72539259 in words is "seventy-two million, five hundred thirty-nine thousand, two hundred fifty-nine".