256481158 has 8 divisors (see below), whose sum is σ = 394105320. Its totient is φ = 125112720.

The previous prime is 256481131. The next prime is 256481167. The reversal of 256481158 is 851184652.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 256481158.

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, 1563828 + ... + 1563991.

It is an arithmetic number, because the mean of its divisors is an integer number (49263165).

Almost surely, 2^256481158 is an apocalyptic number.

256481158 is a deficient number, since it is larger than the sum of its proper divisors (137624162).

256481158 is a wasteful number, since it uses less digits than its factorization.

256481158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127862.

The product of its digits is 76800, while the sum is 40.

The square root of 256481158 is about 16015.0291289151. The cubic root of 256481158 is about 635.3579794818.

The spelling of 256481158 in words is "two hundred fifty-six million, four hundred eighty-one thousand, one hundred fifty-eight".