72509702 has 16 divisors (see below), whose sum is σ = 111136320. Its totient is φ = 35470248.

The previous prime is 72509699. The next prime is 72509707. The reversal of 72509702 is 20790527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72509707) 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, 25433 + ... + 28139.

It is an arithmetic number, because the mean of its divisors is an integer number (6946020).

Almost surely, 2^72509702 is an apocalyptic number.

72509702 is a deficient number, since it is larger than the sum of its proper divisors (38626618).

72509702 is a wasteful number, since it uses less digits than its factorization.

72509702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 72509702 is about 8515.2628849613. The cubic root of 72509702 is about 416.9961450147.

The spelling of 72509702 in words is "seventy-two million, five hundred nine thousand, seven hundred two".