320401000 has 32 divisors (see below), whose sum is σ = 749740680. Its totient is φ = 128160000.

The previous prime is 320400973. The next prime is 320401013. The reversal of 320401000 is 104023.

It can be written as a sum of positive squares in 4 ways, for example, as 18267076 + 302133924 = 4274^2 + 17382^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159201 + ... + 161200.

Almost surely, 2^320401000 is an apocalyptic number.

It is an amenable number.

320401000 is an abundant number, since it is smaller than the sum of its proper divisors (429339680).

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

320401000 is a wasteful number, since it uses less digits than its factorization.

320401000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320422 (or 320408 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 320401000 is about 17899.7486015866. The cubic root of 320401000 is about 684.2759678920.

Adding to 320401000 its reverse (104023), we get a palindrome (320505023).

The spelling of 320401000 in words is "three hundred twenty million, four hundred one thousand".