72256444 has 12 divisors (see below), whose sum is σ = 136175704. Its totient is φ = 33349104.

The previous prime is 72256439. The next prime is 72256447. The reversal of 72256444 is 44465227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256447) 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, 694722 + ... + 694825.

Almost surely, 2^72256444 is an apocalyptic number.

It is an amenable number.

72256444 is a deficient number, since it is larger than the sum of its proper divisors (63919260).

72256444 is a wasteful number, since it uses less digits than its factorization.

72256444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389564 (or 1389562 counting only the distinct ones).

The product of its digits is 53760, while the sum is 34.

The square root of 72256444 is about 8500.3790503718. The cubic root of 72256444 is about 416.5100914272.

The spelling of 72256444 in words is "seventy-two million, two hundred fifty-six thousand, four hundred forty-four".