264326440 has 64 divisors (see below), whose sum is σ = 687398400. Its totient is φ = 89599488.

The previous prime is 264326437. The next prime is 264326441. The reversal of 264326440 is 44623462.

It is not an unprimeable number, because it can be changed into a prime (264326441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19617 + ... + 30223.

It is an arithmetic number, because the mean of its divisors is an integer number (10740600).

Almost surely, 2^264326440 is an apocalyptic number.

264326440 is a gapful number since it is divisible by the number (20) 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 264326440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343699200).

264326440 is an abundant number, since it is smaller than the sum of its proper divisors (423071960).

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

264326440 is a wasteful number, since it uses less digits than its factorization.

264326440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10714 (or 10710 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 264326440 is about 16258.1192024170. The cubic root of 264326440 is about 641.7711680778.

The spelling of 264326440 in words is "two hundred sixty-four million, three hundred twenty-six thousand, four hundred forty".