264399936 has 56 divisors (see below), whose sum is σ = 701344800. Its totient is φ = 87908352.

The previous prime is 264399917. The next prime is 264399937. The reversal of 264399936 is 639993462.

264399936 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (264399937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84675 + ... + 87741.

Almost surely, 2^264399936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264399936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350672400).

264399936 is an abundant number, since it is smaller than the sum of its proper divisors (436944864).

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

264399936 is a wasteful number, since it uses less digits than its factorization.

264399936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531 (or 3521 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 51.

The square root of 264399936 is about 16260.3793313686. The cubic root of 264399936 is about 641.8306440838.

The spelling of 264399936 in words is "two hundred sixty-four million, three hundred ninety-nine thousand, nine hundred thirty-six".