254840868 has 72 divisors (see below), whose sum is σ = 658082880. Its totient is φ = 83133120.

The previous prime is 254840857. The next prime is 254840879. The reversal of 254840868 is 868048452.

254840868 is a `hidden beast` number, since 2 + 548 + 40 + 8 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (254840857) and next prime (254840879).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457246 + ... + 457802.

It is an arithmetic number, because the mean of its divisors is an integer number (9140040).

Almost surely, 2^254840868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 254840868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329041440).

254840868 is an abundant number, since it is smaller than the sum of its proper divisors (403242012).

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

254840868 is a wasteful number, since it uses less digits than its factorization.

254840868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 254840868 is about 15963.7360288875. The cubic root of 254840868 is about 634.0006335679. Note that the first 3 decimals are identical.

The spelling of 254840868 in words is "two hundred fifty-four million, eight hundred forty thousand, eight hundred sixty-eight".