320750140 has 12 divisors (see below), whose sum is σ = 673575336. Its totient is φ = 128300048.

The previous prime is 320750119. The next prime is 320750159. The reversal of 320750140 is 41057023.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 8018734 + ... + 8018773.

It is an arithmetic number, because the mean of its divisors is an integer number (56131278).

Almost surely, 2^320750140 is an apocalyptic number.

It is an amenable number.

320750140 is an abundant number, since it is smaller than the sum of its proper divisors (352825196).

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

320750140 is a wasteful number, since it uses less digits than its factorization.

320750140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16037516 (or 16037514 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 320750140 is about 17909.4985971132. The cubic root of 320750140 is about 684.5244288152.

The spelling of 320750140 in words is "three hundred twenty million, seven hundred fifty thousand, one hundred forty".