72732226 has 16 divisors (see below), whose sum is σ = 124845696. Its totient is φ = 31130496.

The previous prime is 72732223. The next prime is 72732229. The reversal of 72732226 is 62223727.

It is an interprime number because it is at equal distance from previous prime (72732223) and next prime (72732229).

It is not an unprimeable number, because it can be changed into a prime (72732223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9490 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (7802856).

Almost surely, 2^72732226 is an apocalyptic number.

72732226 is a deficient number, since it is larger than the sum of its proper divisors (52113470).

72732226 is a wasteful number, since it uses less digits than its factorization.

72732226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6753.

The product of its digits is 14112, while the sum is 31.

The square root of 72732226 is about 8528.3190606356. The cubic root of 72732226 is about 417.4222805837.

The spelling of 72732226 in words is "seventy-two million, seven hundred thirty-two thousand, two hundred twenty-six".