268854640 has 20 divisors (see below), whose sum is σ = 625087224. Its totient is φ = 107541824.

The previous prime is 268854631. The next prime is 268854653. The reversal of 268854640 is 46458862.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 1680262 + ... + 1680421.

Almost surely, 2^268854640 is an apocalyptic number.

268854640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268854640 is an abundant number, since it is smaller than the sum of its proper divisors (356232584).

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

268854640 is a wasteful number, since it uses less digits than its factorization.

268854640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360696 (or 3360690 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 268854640 is about 16396.7874902372. The cubic root of 268854640 is about 645.4151844855.

The spelling of 268854640 in words is "two hundred sixty-eight million, eight hundred fifty-four thousand, six hundred forty".