256940035 has 16 divisors (see below), whose sum is σ = 337165920. Its totient is φ = 186416640.

The previous prime is 256940027. The next prime is 256940039. The reversal of 256940035 is 530049652.

It is not a de Polignac number, because 256940035 - 2³ = 256940027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256940039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18421 + ... + 29209.

It is an arithmetic number, because the mean of its divisors is an integer number (21072870).

Almost surely, 2^256940035 is an apocalyptic number.

256940035 is a deficient number, since it is larger than the sum of its proper divisors (80225885).

256940035 is a wasteful number, since it uses less digits than its factorization.

256940035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11238.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 256940035 is about 16029.3491758087. The cubic root of 256940035 is about 635.7366654700.

Adding to 256940035 its reverse (530049652), we get a palindrome (786989687).

The spelling of 256940035 in words is "two hundred fifty-six million, nine hundred forty thousand, thirty-five".