72742326 has 16 divisors (see below), whose sum is σ = 148868544. Its totient is φ = 23683464.

The previous prime is 72742309. The next prime is 72742363. The reversal of 72742326 is 62324727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140716 + ... + 141231.

It is an arithmetic number, because the mean of its divisors is an integer number (9304284).

Almost surely, 2^72742326 is an apocalyptic number.

72742326 is an abundant number, since it is smaller than the sum of its proper divisors (76126218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72742326 is a wasteful number, since it uses less digits than its factorization.

72742326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281995.

The product of its digits is 28224, while the sum is 33.

The square root of 72742326 is about 8528.9111849051. The cubic root of 72742326 is about 417.4416015465.

The spelling of 72742326 in words is "seventy-two million, seven hundred forty-two thousand, three hundred twenty-six".