72448756 has 6 divisors (see below), whose sum is σ = 126785330. Its totient is φ = 36224376.

The previous prime is 72448741. The next prime is 72448769. The reversal of 72448756 is 65784427.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 27772900 = 6684^2 + 5270^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9056091 + ... + 9056098.

Almost surely, 2^72448756 is an apocalyptic number.

It is an amenable number.

72448756 is a deficient number, since it is larger than the sum of its proper divisors (54336574).

72448756 is a wasteful number, since it uses less digits than its factorization.

72448756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18112193 (or 18112191 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The square root of 72448756 is about 8511.6834997549. The cubic root of 72448756 is about 416.8792807879.

The spelling of 72448756 in words is "seventy-two million, four hundred forty-eight thousand, seven hundred fifty-six".