72732337 has 4 divisors (see below), whose sum is σ = 73376100. Its totient is φ = 72088576.

The previous prime is 72732301. The next prime is 72732349. The reversal of 72732337 is 73323727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18326961 + 54405376 = 4281^2 + 7376^2 .

It is not a de Polignac number, because 72732337 - 2¹⁵ = 72699569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72732397) 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, 321712 + ... + 321937.

It is an arithmetic number, because the mean of its divisors is an integer number (18344025).

Almost surely, 2^72732337 is an apocalyptic number.

It is an amenable number.

72732337 is a deficient number, since it is larger than the sum of its proper divisors (643763).

72732337 is a wasteful number, since it uses less digits than its factorization.

72732337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643762.

The product of its digits is 37044, while the sum is 34.

The square root of 72732337 is about 8528.3255683633. The cubic root of 72732337 is about 417.4224929327.

The spelling of 72732337 in words is "seventy-two million, seven hundred thirty-two thousand, three hundred thirty-seven".