268721224 has 16 divisors (see below), whose sum is σ = 504226800. Its totient is φ = 134260752.

The previous prime is 268721209. The next prime is 268721239. The reversal of 268721224 is 422127862.

It is an interprime number because it is at equal distance from previous prime (268721209) and next prime (268721239).

It is a super-2 number, since 2×268721224² = 144422192456116352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268721224.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354 + ... + 23185.

It is an arithmetic number, because the mean of its divisors is an integer number (31514175).

Almost surely, 2^268721224 is an apocalyptic number.

It is an amenable number.

268721224 is a deficient number, since it is larger than the sum of its proper divisors (235505576).

268721224 is a wasteful number, since it uses less digits than its factorization.

268721224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24972 (or 24968 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 268721224 is about 16392.7186274882. The cubic root of 268721224 is about 645.3084068854.

The spelling of 268721224 in words is "two hundred sixty-eight million, seven hundred twenty-one thousand, two hundred twenty-four".