709328880 has 160 divisors (see below), whose sum is σ = 2631289920. Its totient is φ = 174597120.

The previous prime is 709328869. The next prime is 709328897. The reversal of 709328880 is 88823907.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15450 + ... + 40710.

It is an arithmetic number, because the mean of its divisors is an integer number (16445562).

Almost surely, 2^709328880 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 709328880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315644960).

709328880 is an abundant number, since it is smaller than the sum of its proper divisors (1921961040).

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

709328880 is a wasteful number, since it uses less digits than its factorization.

709328880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25296 (or 25284 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 709328880 is about 26633.2288692152. The cubic root of 709328880 is about 891.8309653087.

The spelling of 709328880 in words is "seven hundred nine million, three hundred twenty-eight thousand, eight hundred eighty".