747989760 has 144 divisors (see below), whose sum is σ = 2730260736. Its totient is φ = 170962944.

The previous prime is 747989707. The next prime is 747989771. The reversal of 747989760 is 67989747.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 747989760.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12967 + ... + 40793.

It is an arithmetic number, because the mean of its divisors is an integer number (18960144).

Almost surely, 2^747989760 is an apocalyptic number.

747989760 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747989760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365130368).

747989760 is an abundant number, since it is smaller than the sum of its proper divisors (1982270976).

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

747989760 is a wasteful number, since it uses less digits than its factorization.

747989760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27858 (or 27844 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 57.

The square root of 747989760 is about 27349.4014559734. The cubic root of 747989760 is about 907.7478259783.

The spelling of 747989760 in words is "seven hundred forty-seven million, nine hundred eighty-nine thousand, seven hundred sixty".