326440 has 16 divisors (see below), whose sum is σ = 734580. Its totient is φ = 130560.

The previous prime is 326437. The next prime is 326441. The reversal of 326440 is 44623.

It can be written as a sum of positive squares in 2 ways, for example, as 320356 + 6084 = 566^2 + 78^2 .

It is not an unprimeable number, because it can be changed into a prime (326441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4041 + ... + 4120.

2³²⁶⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

326440 is an abundant number, since it is smaller than the sum of its proper divisors (408140).

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

326440 is a wasteful number, since it uses less digits than its factorization.

326440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172 (or 8168 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 326440 is about 571.3492802131. The cubic root of 326440 is about 68.8548372969.

The spelling of 326440 in words is "three hundred twenty-six thousand, four hundred forty".