256354144 has 12 divisors (see below), whose sum is σ = 504697284. Its totient is φ = 128177056.

The previous prime is 256354139. The next prime is 256354151. The reversal of 256354144 is 441453652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4005502 + ... + 4005565.

It is an arithmetic number, because the mean of its divisors is an integer number (42058107).

Almost surely, 2^256354144 is an apocalyptic number.

It is an amenable number.

256354144 is a deficient number, since it is larger than the sum of its proper divisors (248343140).

256354144 is an equidigital number, since it uses as much as digits as its factorization.

256354144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011077 (or 8011069 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 256354144 is about 16011.0631751923. The cubic root of 256354144 is about 635.2530819994.

The spelling of 256354144 in words is "two hundred fifty-six million, three hundred fifty-four thousand, one hundred forty-four".