320709424 has 60 divisors (see below), whose sum is σ = 742497616. Its totient is φ = 131446656.

The previous prime is 320709409. The next prime is 320709439. The reversal of 320709424 is 424907023.

It is an interprime number because it is at equal distance from previous prime (320709409) and next prime (320709439).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56542 + ... + 61954.

Almost surely, 2^320709424 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 320709424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371248808).

320709424 is an abundant number, since it is smaller than the sum of its proper divisors (421788192).

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

320709424 is a wasteful number, since it uses less digits than its factorization.

320709424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 320709424 is about 17908.3618457971. The cubic root of 320709424 is about 684.4954630954.

The spelling of 320709424 in words is "three hundred twenty million, seven hundred nine thousand, four hundred twenty-four".