320901426 has 56 divisors (see below), whose sum is σ = 730102140. Its totient is φ = 105722496.

The previous prime is 320901421. The next prime is 320901433. The reversal of 320901426 is 624109023.

It can be written as a sum of positive squares in 2 ways, for example, as 320445801 + 455625 = 17901^2 + 675^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 320901426.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320901421) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 128526 + ... + 130998.

Almost surely, 2^320901426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320901426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365051070).

320901426 is an abundant number, since it is smaller than the sum of its proper divisors (409200714).

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

320901426 is an equidigital number, since it uses as much as digits as its factorization.

320901426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2567 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 320901426 is about 17913.7217238630. The cubic root of 320901426 is about 684.6320335335.

The spelling of 320901426 in words is "three hundred twenty million, nine hundred one thousand, four hundred twenty-six".