709498240 has 128 divisors (see below), whose sum is σ = 1910615040. Its totient is φ = 249600000.

The previous prime is 709498211. The next prime is 709498277. The reversal of 709498240 is 42894907.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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, 216615 + ... + 219865.

It is an arithmetic number, because the mean of its divisors is an integer number (14926680).

Almost surely, 2^709498240 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 709498240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955307520).

709498240 is an abundant number, since it is smaller than the sum of its proper divisors (1201116800).

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

709498240 is a wasteful number, since it uses less digits than its factorization.

709498240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3300 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 709498240 is about 26636.4081662675. The cubic root of 709498240 is about 891.9019377811.

The spelling of 709498240 in words is "seven hundred nine million, four hundred ninety-eight thousand, two hundred forty".