256898514 has 8 divisors (see below), whose sum is σ = 513797040. Its totient is φ = 85632836.

The previous prime is 256898513. The next prime is 256898531. The reversal of 256898514 is 415898652.

It is a sphenic number, since it is the product of 3 distinct primes.

256898514 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (256898513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21408204 + ... + 21408215.

It is an arithmetic number, because the mean of its divisors is an integer number (64224630).

Almost surely, 2^256898514 is an apocalyptic number.

256898514 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256898514 is a wasteful number, since it uses less digits than its factorization.

256898514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42816424.

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

The square root of 256898514 is about 16028.0539679650. The cubic root of 256898514 is about 635.7024190305.

The spelling of 256898514 in words is "two hundred fifty-six million, eight hundred ninety-eight thousand, five hundred fourteen".