320450140 has 12 divisors (see below), whose sum is σ = 672945336. Its totient is φ = 128180048.

The previous prime is 320450113. The next prime is 320450161. The reversal of 320450140 is 41054023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8011234 + ... + 8011273.

It is an arithmetic number, because the mean of its divisors is an integer number (56078778).

Almost surely, 2^320450140 is an apocalyptic number.

It is an amenable number.

320450140 is an abundant number, since it is smaller than the sum of its proper divisors (352495196).

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

320450140 is a wasteful number, since it uses less digits than its factorization.

320450140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022516 (or 16022514 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 320450140 is about 17901.1211939364. The cubic root of 320450140 is about 684.3109486423.

The spelling of 320450140 in words is "three hundred twenty million, four hundred fifty thousand, one hundred forty".