268561628 has 12 divisors (see below), whose sum is σ = 477949080. Its totient is φ = 132004752.

The previous prime is 268561621. The next prime is 268561681. The reversal of 268561628 is 826165862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268561621) 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, 568751 + ... + 569222.

It is an arithmetic number, because the mean of its divisors is an integer number (39829090).

Almost surely, 2^268561628 is an apocalyptic number.

It is an amenable number.

268561628 is a deficient number, since it is larger than the sum of its proper divisors (209387452).

268561628 is a wasteful number, since it uses less digits than its factorization.

268561628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138036 (or 1138034 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 268561628 is about 16387.8500115177. The cubic root of 268561628 is about 645.1806300586.

The spelling of 268561628 in words is "two hundred sixty-eight million, five hundred sixty-one thousand, six hundred twenty-eight".