256612246 has 32 divisors (see below), whose sum is σ = 446396832. Its totient is φ = 109340160.

The previous prime is 256612241. The next prime is 256612249. The reversal of 256612246 is 642216652.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256612241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102360 + ... + 104836.

It is an arithmetic number, because the mean of its divisors is an integer number (13949901).

Almost surely, 2^256612246 is an apocalyptic number.

256612246 is a deficient number, since it is larger than the sum of its proper divisors (189784586).

256612246 is a wasteful number, since it uses less digits than its factorization.

256612246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784.

The product of its digits is 34560, while the sum is 34.

The square root of 256612246 is about 16019.1212617921. The cubic root of 256612246 is about 635.4662052634.

Adding to 256612246 its reverse (642216652), we get a palindrome (898828898).

The spelling of 256612246 in words is "two hundred fifty-six million, six hundred twelve thousand, two hundred forty-six".