709240320 has 320 divisors, whose sum is σ = 2608404480. Its totient is φ = 182476800.

The previous prime is 709240313. The next prime is 709240321. The reversal of 709240320 is 23042907.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709240321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2142555 + ... + 2142885.

It is an arithmetic number, because the mean of its divisors is an integer number (8151264).

Almost surely, 2^709240320 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 709240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304202240).

709240320 is an abundant number, since it is smaller than the sum of its proper divisors (1899164160).

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

709240320 is a wasteful number, since it uses less digits than its factorization.

709240320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 709240320 is about 26631.5662325745. The cubic root of 709240320 is about 891.7938486107.

The spelling of 709240320 in words is "seven hundred nine million, two hundred forty thousand, three hundred twenty".