320426250 has 40 divisors (see below), whose sum is σ = 800818656. Its totient is φ = 85446000.

The previous prime is 320426233. The next prime is 320426257. The reversal of 320426250 is 52624023.

It is a self number, because there is not a number n which added to its sum of digits gives 320426250.

It is not an unprimeable number, because it can be changed into a prime (320426257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38974 + ... + 46473.

Almost surely, 2^320426250 is an apocalyptic number.

320426250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320426250 is an abundant number, since it is smaller than the sum of its proper divisors (480392406).

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

320426250 is an equidigital number, since it uses as much as digits as its factorization.

320426250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85472 (or 85457 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 320426250 is about 17900.4539048595. The cubic root of 320426250 is about 684.2939427780.

The spelling of 320426250 in words is "three hundred twenty million, four hundred twenty-six thousand, two hundred fifty".