400326 has 8 divisors (see below), whose sum is σ = 800664. Its totient is φ = 133440.

The previous prime is 400321. The next prime is 400331. The reversal of 400326 is 623004.

It is an interprime number because it is at equal distance from previous prime (400321) and next prime (400331).

It is a sphenic number, since it is the product of 3 distinct primes.

400326 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400321) by changing a digit.

400326 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33355 + ... + 33366.

It is an arithmetic number, because the mean of its divisors is an integer number (100083).

2⁴⁰⁰³²⁶ is an apocalyptic number.

400326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400326 is a wasteful number, since it uses less digits than its factorization.

400326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66726.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400326 is about 632.7132051728. The cubic root of 400326 is about 73.7006411086.

The spelling of 400326 in words is "four hundred thousand, three hundred twenty-six".