72212356 has 6 divisors (see below), whose sum is σ = 126371630. Its totient is φ = 36106176.

The previous prime is 72212347. The next prime is 72212381. The reversal of 72212356 is 65321227.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 8468100 = 7984^2 + 2910^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9026541 + ... + 9026548.

Almost surely, 2^72212356 is an apocalyptic number.

It is an amenable number.

72212356 is a deficient number, since it is larger than the sum of its proper divisors (54159274).

72212356 is a wasteful number, since it uses less digits than its factorization.

72212356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18053093 (or 18053091 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 72212356 is about 8497.7853585508. The cubic root of 72212356 is about 416.4253615772.

The spelling of 72212356 in words is "seventy-two million, two hundred twelve thousand, three hundred fifty-six".