320145252 has 24 divisors (see below), whose sum is σ = 853720896. Its totient is φ = 91470048.

The previous prime is 320145251. The next prime is 320145271. The reversal of 320145252 is 252541023.

320145252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (320145251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905543 + ... + 1905710.

It is an arithmetic number, because the mean of its divisors is an integer number (35571704).

Almost surely, 2^320145252 is an apocalyptic number.

It is an amenable number.

320145252 is an abundant number, since it is smaller than the sum of its proper divisors (533575644).

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

320145252 is a wasteful number, since it uses less digits than its factorization.

320145252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811267 (or 3811265 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 320145252 is about 17892.6032762144. The cubic root of 320145252 is about 684.0938536103.

Adding to 320145252 its reverse (252541023), we get a palindrome (572686275).

The spelling of 320145252 in words is "three hundred twenty million, one hundred forty-five thousand, two hundred fifty-two".