256944783 has 8 divisors (see below), whose sum is σ = 362745648. Its totient is φ = 161220224.

The previous prime is 256944781. The next prime is 256944797. The reversal of 256944783 is 387449652.

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

It is a cyclic number.

It is not a de Polignac number, because 256944783 - 2¹ = 256944781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256944781) 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, 2519016 + ... + 2519117.

It is an arithmetic number, because the mean of its divisors is an integer number (45343206).

Almost surely, 2^256944783 is an apocalyptic number.

256944783 is a deficient number, since it is larger than the sum of its proper divisors (105800865).

256944783 is a wasteful number, since it uses less digits than its factorization.

256944783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038153.

The product of its digits is 1451520, while the sum is 48.

The square root of 256944783 is about 16029.4972784551. The cubic root of 256944783 is about 635.7405813760.

The spelling of 256944783 in words is "two hundred fifty-six million, nine hundred forty-four thousand, seven hundred eighty-three".