72739222 has 8 divisors (see below), whose sum is σ = 109150272. Its totient is φ = 36355800.

The previous prime is 72739213. The next prime is 72739223. The reversal of 72739222 is 22293727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72739223) 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, 1947 + ... + 12217.

It is an arithmetic number, because the mean of its divisors is an integer number (13643784).

Almost surely, 2^72739222 is an apocalyptic number.

72739222 is a deficient number, since it is larger than the sum of its proper divisors (36411050).

72739222 is a wasteful number, since it uses less digits than its factorization.

72739222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13814.

The product of its digits is 21168, while the sum is 34.

The square root of 72739222 is about 8528.7292136637. The cubic root of 72739222 is about 417.4356638885.

The spelling of 72739222 in words is "seventy-two million, seven hundred thirty-nine thousand, two hundred twenty-two".