72453244 has 12 divisors (see below), whose sum is σ = 126852768. Its totient is φ = 36209600.

The previous prime is 72453233. The next prime is 72453247. The reversal of 72453244 is 44235427.

It is a happy number.

It is a super-2 number, since 2×72453244² = 10498945132247072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72453247) 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, 14829 + ... + 19099.

It is an arithmetic number, because the mean of its divisors is an integer number (10571064).

Almost surely, 2^72453244 is an apocalyptic number.

It is an amenable number.

72453244 is a deficient number, since it is larger than the sum of its proper divisors (54399524).

72453244 is a wasteful number, since it uses less digits than its factorization.

72453244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516 (or 8514 counting only the distinct ones).

The product of its digits is 26880, while the sum is 31.

The square root of 72453244 is about 8511.9471332945. The cubic root of 72453244 is about 416.8878887829.

The spelling of 72453244 in words is "seventy-two million, four hundred fifty-three thousand, two hundred forty-four".