72748380 has 24 divisors (see below), whose sum is σ = 203695632. Its totient is φ = 19399552.

The previous prime is 72748349. The next prime is 72748393. The reversal of 72748380 is 8384727.

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, 606177 + ... + 606296.

It is an arithmetic number, because the mean of its divisors is an integer number (8487318).

Almost surely, 2^72748380 is an apocalyptic number.

It is an amenable number.

72748380 is an abundant number, since it is smaller than the sum of its proper divisors (130947252).

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

72748380 is a wasteful number, since it uses less digits than its factorization.

72748380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212485 (or 1212483 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 72748380 is about 8529.2660880055. The cubic root of 72748380 is about 417.4531817891.

The spelling of 72748380 in words is "seventy-two million, seven hundred forty-eight thousand, three hundred eighty".