72737448 has 32 divisors (see below), whose sum is σ = 207821760. Its totient is φ = 20782080.

The previous prime is 72737447. The next prime is 72737507. The reversal of 72737448 is 84473727.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (72737443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216313 + ... + 216648.

It is an arithmetic number, because the mean of its divisors is an integer number (6494430).

Almost surely, 2^72737448 is an apocalyptic number.

It is an amenable number.

72737448 is an abundant number, since it is smaller than the sum of its proper divisors (135084312).

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

72737448 is a wasteful number, since it uses less digits than its factorization.

72737448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432977 (or 432973 counting only the distinct ones).

The product of its digits is 263424, while the sum is 42.

The square root of 72737448 is about 8528.6252116036. The cubic root of 72737448 is about 417.4322703187.

The spelling of 72737448 in words is "seventy-two million, seven hundred thirty-seven thousand, four hundred forty-eight".