264236240 has 40 divisors (see below), whose sum is σ = 630960360. Its totient is φ = 102836736.

The previous prime is 264236233. The next prime is 264236263. The reversal of 264236240 is 42632462.

It can be written as a sum of positive squares in 4 ways, for example, as 52475536 + 211760704 = 7244^2 + 14552^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41675 + ... + 47594.

It is an arithmetic number, because the mean of its divisors is an integer number (15774009).

Almost surely, 2^264236240 is an apocalyptic number.

264236240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264236240 is an abundant number, since it is smaller than the sum of its proper divisors (366724120).

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

264236240 is a wasteful number, since it uses less digits than its factorization.

264236240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89319 (or 89313 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 264236240 is about 16255.3449671177. The cubic root of 264236240 is about 641.6981594333.

The spelling of 264236240 in words is "two hundred sixty-four million, two hundred thirty-six thousand, two hundred forty".