326984640 has 112 divisors (see below), whose sum is σ = 1060411392. Its totient is φ = 85328896.

The previous prime is 326984633. The next prime is 326984711. The reversal of 326984640 is 46489623.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 326984592 and 326984601.

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, 41497 + ... + 48743.

Almost surely, 2^326984640 is an apocalyptic number.

326984640 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 326984640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530205696).

326984640 is an abundant number, since it is smaller than the sum of its proper divisors (733426752).

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

326984640 is a wasteful number, since it uses less digits than its factorization.

326984640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7314 (or 7304 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 326984640 is about 18082.7166100672. The cubic root of 326984640 is about 688.9310901807.

The spelling of 326984640 in words is "three hundred twenty-six million, nine hundred eighty-four thousand, six hundred forty".