72352709 has 32 divisors (see below), whose sum is σ = 89510400. Its totient is φ = 57576960.

The previous prime is 72352699. The next prime is 72352751. The reversal of 72352709 is 90725327.

It is a cyclic number.

It is not a de Polignac number, because 72352709 - 2¹² = 72348613 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 (72352909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302612 + ... + 302850.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 2^72352709 is an apocalyptic number.

It is an amenable number.

72352709 is a deficient number, since it is larger than the sum of its proper divisors (17157691).

72352709 is a wasteful number, since it uses less digits than its factorization.

72352709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 72352709 is about 8506.0395602184. The cubic root of 72352709 is about 416.6949771342.

The spelling of 72352709 in words is "seventy-two million, three hundred fifty-two thousand, seven hundred nine".