326440368 has 160 divisors (see below), whose sum is σ = 1000531200. Its totient is φ = 102876480.

The previous prime is 326440363. The next prime is 326440369. The reversal of 326440368 is 863044623.

It is a happy number.

326440368 is a `hidden beast` number, since 3 + 2 + 644 + 0 + 3 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326440363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664603 + ... + 665093.

It is an arithmetic number, because the mean of its divisors is an integer number (6253320).

Almost surely, 2^326440368 is an apocalyptic number.

326440368 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326440368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500265600).

326440368 is an abundant number, since it is smaller than the sum of its proper divisors (674090832).

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

326440368 is an equidigital number, since it uses as much as digits as its factorization.

326440368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 326440368 is about 18067.6608336553. The cubic root of 326440368 is about 688.5486317052.

The spelling of 326440368 in words is "three hundred twenty-six million, four hundred forty thousand, three hundred sixty-eight".