320352240 has 80 divisors (see below), whose sum is σ = 1069494048. Its totient is φ = 78855168.

The previous prime is 320352223. The next prime is 320352281. The reversal of 320352240 is 42253023.

It is a tau number, because it is divible by the number of its divisors (80).

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, 48219 + ... + 54458.

Almost surely, 2^320352240 is an apocalyptic number.

320352240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320352240 is an abundant number, since it is smaller than the sum of its proper divisors (749141808).

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

320352240 is a wasteful number, since it uses less digits than its factorization.

320352240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102706 (or 102700 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 320352240 is about 17898.3865194604. The cubic root of 320352240 is about 684.2412541126.

The spelling of 320352240 in words is "three hundred twenty million, three hundred fifty-two thousand, two hundred forty".