72448940 has 24 divisors (see below), whose sum is σ = 153029520. Its totient is φ = 28810688.

The previous prime is 72448939. The next prime is 72448967. The reversal of 72448940 is 4984427.

It is a junction number, because it is equal to n+sod(n) for n = 72448894 and 72448903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7010 + ... + 13929.

It is an arithmetic number, because the mean of its divisors is an integer number (6376230).

Almost surely, 2^72448940 is an apocalyptic number.

It is an amenable number.

72448940 is an abundant number, since it is smaller than the sum of its proper divisors (80580580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72448940 is a wasteful number, since it uses less digits than its factorization.

72448940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21121 (or 21119 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 72448940 is about 8511.6943084206. The cubic root of 72448940 is about 416.8796337073.

The spelling of 72448940 in words is "seventy-two million, four hundred forty-eight thousand, nine hundred forty".