747478732 has 72 divisors (see below), whose sum is σ = 1787743440. Its totient is φ = 268813440.

The previous prime is 747478723. The next prime is 747478747. The reversal of 747478732 is 237874747.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14694 + ... + 41362.

It is an arithmetic number, because the mean of its divisors is an integer number (24829770).

Almost surely, 2^747478732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747478732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893871720).

747478732 is an abundant number, since it is smaller than the sum of its proper divisors (1040264708).

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

747478732 is a wasteful number, since it uses less digits than its factorization.

747478732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26711 (or 26702 counting only the distinct ones).

The product of its digits is 1843968, while the sum is 49.

The square root of 747478732 is about 27340.0572786525. The cubic root of 747478732 is about 907.5410538792.

The spelling of 747478732 in words is "seven hundred forty-seven million, four hundred seventy-eight thousand, seven hundred thirty-two".