254991768 has 16 divisors (see below), whose sum is σ = 637479480. Its totient is φ = 84997248.

The previous prime is 254991727. The next prime is 254991791. The reversal of 254991768 is 867199452.

It is a self number, because there is not a number n which added to its sum of digits gives 254991768.

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, 5312305 + ... + 5312352.

Almost surely, 2^254991768 is an apocalyptic number.

It is an amenable number.

254991768 is an abundant number, since it is smaller than the sum of its proper divisors (382487712).

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

254991768 is a wasteful number, since it uses less digits than its factorization.

254991768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10624666 (or 10624662 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 254991768 is about 15968.4616666728. The cubic root of 254991768 is about 634.1257467013.

The spelling of 254991768 in words is "two hundred fifty-four million, nine hundred ninety-one thousand, seven hundred sixty-eight".