326730240 has 320 divisors, whose sum is σ = 1207958400. Its totient is φ = 83607552.

The previous prime is 326730227. The next prime is 326730281. The reversal of 326730240 is 42037623.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2004399 + ... + 2004561.

It is an arithmetic number, because the mean of its divisors is an integer number (3774870).

Almost surely, 2^326730240 is an apocalyptic number.

326730240 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 326730240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603979200).

326730240 is an abundant number, since it is smaller than the sum of its proper divisors (881228160).

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

326730240 is a wasteful number, since it uses less digits than its factorization.

326730240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 326730240 is about 18075.6809000380. The cubic root of 326730240 is about 688.7523768505.

Adding to 326730240 its reverse (42037623), we get a palindrome (368767863).

The spelling of 326730240 in words is "three hundred twenty-six million, seven hundred thirty thousand, two hundred forty".