264334428 has 108 divisors (see below), whose sum is σ = 736866312. Its totient is φ = 82840320.

The previous prime is 264334417. The next prime is 264334453. The reversal of 264334428 is 824433462.

264334428 is a `hidden beast` number, since 2 + 643 + 3 + 4 + 4 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

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

It is a junction number, because it is equal to n+sod(n) for n = 264334392 and 264334401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 280438 + ... + 281378.

Almost surely, 2^264334428 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 264334428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368433156).

264334428 is an abundant number, since it is smaller than the sum of its proper divisors (472531884).

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

264334428 is a wasteful number, since it uses less digits than its factorization.

264334428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 963 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 264334428 is about 16258.3648624331. The cubic root of 264334428 is about 641.7776328321. Note that the first 3 decimals are identical.

The spelling of 264334428 in words is "two hundred sixty-four million, three hundred thirty-four thousand, four hundred twenty-eight".