256143846 has 16 divisors (see below), whose sum is σ = 585471744. Its totient is φ = 73183944.

The previous prime is 256143841. The next prime is 256143857. The reversal of 256143846 is 648341652.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256143841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3049290 + ... + 3049373.

It is an arithmetic number, because the mean of its divisors is an integer number (36591984).

Almost surely, 2^256143846 is an apocalyptic number.

256143846 is an abundant number, since it is smaller than the sum of its proper divisors (329327898).

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

256143846 is a wasteful number, since it uses less digits than its factorization.

256143846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6098675.

The product of its digits is 138240, while the sum is 39.

The square root of 256143846 is about 16004.4945562176. The cubic root of 256143846 is about 635.0793262752.

The spelling of 256143846 in words is "two hundred fifty-six million, one hundred forty-three thousand, eight hundred forty-six".