268985451 has 48 divisors (see below), whose sum is σ = 442320000. Its totient is φ = 144571392.

The previous prime is 268985443. The next prime is 268985467. The reversal of 268985451 is 154589862.

It is not a de Polignac number, because 268985451 - 2³ = 268985443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268985451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268985401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 538800 + ... + 539298.

It is an arithmetic number, because the mean of its divisors is an integer number (9215000).

Almost surely, 2^268985451 is an apocalyptic number.

268985451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

268985451 is a deficient number, since it is larger than the sum of its proper divisors (173334549).

268985451 is a wasteful number, since it uses less digits than its factorization.

268985451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 721 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The square root of 268985451 is about 16400.7759267664. The cubic root of 268985451 is about 645.5198429194.

The spelling of 268985451 in words is "two hundred sixty-eight million, nine hundred eighty-five thousand, four hundred fifty-one".