709385280 has 224 divisors, whose sum is σ = 2350373760. Its totient is φ = 181125120.

The previous prime is 709385279. The next prime is 709385293. The reversal of 709385280 is 82583907.

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, 2636986 + ... + 2637254.

It is an arithmetic number, because the mean of its divisors is an integer number (10492740).

Almost surely, 2^709385280 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 709385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1175186880).

709385280 is an abundant number, since it is smaller than the sum of its proper divisors (1640988480).

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

709385280 is a wasteful number, since it uses less digits than its factorization.

709385280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 709385280 is about 26634.2876758512. The cubic root of 709385280 is about 891.8546017040.

The spelling of 709385280 in words is "seven hundred nine million, three hundred eighty-five thousand, two hundred eighty".