72273648 has 40 divisors (see below), whose sum is σ = 192733696. Its totient is φ = 23313600.

The previous prime is 72273629. The next prime is 72273671. The reversal of 72273648 is 84637227.

It is a congruent number.

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, 22798 + ... + 25773.

Almost surely, 2^72273648 is an apocalyptic number.

It is an amenable number.

72273648 is an abundant number, since it is smaller than the sum of its proper divisors (120460048).

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

72273648 is a wasteful number, since it uses less digits than its factorization.

72273648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48613 (or 48607 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 72273648 is about 8501.3909450160. The cubic root of 72273648 is about 416.5431453233.

The spelling of 72273648 in words is "seventy-two million, two hundred seventy-three thousand, six hundred forty-eight".