268495638 has 16 divisors (see below), whose sum is σ = 537249456. Its totient is φ = 89455520.

The previous prime is 268495613. The next prime is 268495649. The reversal of 268495638 is 836594862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4408 + ... + 23588.

It is an arithmetic number, because the mean of its divisors is an integer number (33578091).

Almost surely, 2^268495638 is an apocalyptic number.

268495638 is an abundant number, since it is smaller than the sum of its proper divisors (268753818).

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

268495638 is a wasteful number, since it uses less digits than its factorization.

268495638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21519.

The product of its digits is 2488320, while the sum is 51.

The square root of 268495638 is about 16385.8365059584. The cubic root of 268495638 is about 645.1277819064.

The spelling of 268495638 in words is "two hundred sixty-eight million, four hundred ninety-five thousand, six hundred thirty-eight".