72647322 has 32 divisors (see below), whose sum is σ = 163620864. Its totient is φ = 21303600.

The previous prime is 72647297. The next prime is 72647359. The reversal of 72647322 is 22374627.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15708 + ... + 19799.

It is an arithmetic number, because the mean of its divisors is an integer number (5113152).

Almost surely, 2^72647322 is an apocalyptic number.

72647322 is an abundant number, since it is smaller than the sum of its proper divisors (90973542).

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

72647322 is a wasteful number, since it uses less digits than its factorization.

72647322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35554.

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

The square root of 72647322 is about 8523.3398383498. The cubic root of 72647322 is about 417.2597913047.

The spelling of 72647322 in words is "seventy-two million, six hundred forty-seven thousand, three hundred twenty-two".