72740408 has 16 divisors (see below), whose sum is σ = 146879880. Its totient is φ = 33572448.

The previous prime is 72740407. The next prime is 72740411. The reversal of 72740408 is 80404727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72740407) 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, 349610 + ... + 349817.

Almost surely, 2^72740408 is an apocalyptic number.

It is an amenable number.

72740408 is an abundant number, since it is smaller than the sum of its proper divisors (74139472).

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

72740408 is a wasteful number, since it uses less digits than its factorization.

72740408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699446 (or 699442 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 72740408 is about 8528.7987430822. The cubic root of 72740408 is about 417.4379326141.

The spelling of 72740408 in words is "seventy-two million, seven hundred forty thousand, four hundred eight".