326331840 has 112 divisors (see below), whose sum is σ = 1090696320. Its totient is φ = 82437120.

The previous prime is 326331839. The next prime is 326331869. The reversal of 326331840 is 48133623.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 326331798 and 326331807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9295 + ... + 27185.

It is an arithmetic number, because the mean of its divisors is an integer number (9738360).

Almost surely, 2^326331840 is an apocalyptic number.

326331840 is a gapful number since it is divisible by the number (30) 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 326331840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545348160).

326331840 is an abundant number, since it is smaller than the sum of its proper divisors (764364480).

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

326331840 is a wasteful number, since it uses less digits than its factorization.

326331840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17930 (or 17920 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 326331840 is about 18064.6572068224. The cubic root of 326331840 is about 688.4723185446.

The spelling of 326331840 in words is "three hundred twenty-six million, three hundred thirty-one thousand, eight hundred forty".