264347280 has 320 divisors, whose sum is σ = 1009221120. Its totient is φ = 63258624.

The previous prime is 264347243. The next prime is 264347299. The reversal of 264347280 is 82743462.

264347280 is a `hidden beast` number, since 2 + 643 + 4 + 7 + 2 + 8 + 0 = 666.

264347280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 844404 + ... + 844716.

It is an arithmetic number, because the mean of its divisors is an integer number (3153816).

Almost surely, 2^264347280 is an apocalyptic number.

264347280 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 264347280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504610560).

264347280 is an abundant number, since it is smaller than the sum of its proper divisors (744873840).

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

264347280 is a wasteful number, since it uses less digits than its factorization.

264347280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 264347280 is about 16258.7601003275. The cubic root of 264347280 is about 641.7880337883.

The spelling of 264347280 in words is "two hundred sixty-four million, three hundred forty-seven thousand, two hundred eighty".