747390720 has 216 divisors, whose sum is σ = 2551230864. Its totient is φ = 185827328.

The previous prime is 747390691. The next prime is 747390733. The reversal of 747390720 is 27093747.

It is a congruent number.

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, 6984907 + ... + 6985013.

It is an arithmetic number, because the mean of its divisors is an integer number (11811254).

Almost surely, 2^747390720 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 747390720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275615432).

747390720 is an abundant number, since it is smaller than the sum of its proper divisors (1803840144).

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

747390720 is a wasteful number, since it uses less digits than its factorization.

747390720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 747390720 is about 27338.4476516133. The cubic root of 747390720 is about 907.5054329601.

The spelling of 747390720 in words is "seven hundred forty-seven million, three hundred ninety thousand, seven hundred twenty".