326442240 has 216 divisors, whose sum is σ = 1157476320. Its totient is φ = 84897792.

The previous prime is 326442223. The next prime is 326442301. The reversal of 326442240 is 42244623.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495031 + ... + 495689.

Almost surely, 2^326442240 is an apocalyptic number.

326442240 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 326442240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578738160).

326442240 is an abundant number, since it is smaller than the sum of its proper divisors (831034080).

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

326442240 is a wasteful number, since it uses less digits than its factorization.

326442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 326442240 is about 18067.7126388483. The cubic root of 326442240 is about 688.5499478829.

Adding to 326442240 its reverse (42244623), we get a palindrome (368686863).

The spelling of 326442240 in words is "three hundred twenty-six million, four hundred forty-two thousand, two hundred forty".