72254128 has 20 divisors (see below), whose sum is σ = 140161168. Its totient is φ = 36083520.

The previous prime is 72254113. The next prime is 72254141. The reversal of 72254128 is 82145227.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72254128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14125 + ... + 18547.

Almost surely, 2^72254128 is an apocalyptic number.

It is an amenable number.

72254128 is a deficient number, since it is larger than the sum of its proper divisors (67907040).

72254128 is a wasteful number, since it uses less digits than its factorization.

72254128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452 (or 5446 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 72254128 is about 8500.2428200611. The cubic root of 72254128 is about 416.5056413158.

The spelling of 72254128 in words is "seventy-two million, two hundred fifty-four thousand, one hundred twenty-eight".