72222716 has 6 divisors (see below), whose sum is σ = 126389760. Its totient is φ = 36111356.

The previous prime is 72222713. The next prime is 72222721. The reversal of 72222716 is 61722227.

It is a super-2 number, since 2×72222716² = 10432241412833312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72222713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9027836 + ... + 9027843.

It is an arithmetic number, because the mean of its divisors is an integer number (21064960).

Almost surely, 2^72222716 is an apocalyptic number.

It is an amenable number.

72222716 is a deficient number, since it is larger than the sum of its proper divisors (54167044).

72222716 is a wasteful number, since it uses less digits than its factorization.

72222716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18055683 (or 18055681 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 72222716 is about 8498.3949072751. The cubic root of 72222716 is about 416.4452748842.

The spelling of 72222716 in words is "seventy-two million, two hundred twenty-two thousand, seven hundred sixteen".