218795264 has 36 divisors (see below), whose sum is σ = 440798820. Its totient is φ = 108380160.

The previous prime is 218795263. The next prime is 218795281. The reversal of 218795264 is 462597812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114918400 + 103876864 = 10720^2 + 10192^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218795263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23984 + ... + 31824.

Almost surely, 2^218795264 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 218795264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220399410).

218795264 is an abundant number, since it is smaller than the sum of its proper divisors (222003556).

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

218795264 is an equidigital number, since it uses as much as digits as its factorization.

218795264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966 (or 7952 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 218795264 is about 14791.7295810869. The cubic root of 218795264 is about 602.5771222936.

The spelling of 218795264 in words is "two hundred eighteen million, seven hundred ninety-five thousand, two hundred sixty-four".