256919112 has 36 divisors (see below), whose sum is σ = 696191145. Its totient is φ = 85594368.

The previous prime is 256919107. The next prime is 256919119. The reversal of 256919112 is 211919652.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

256919112 is a `hidden beast` number, since 2 + 569 + 1 + 91 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 256832676 + 86436 = 16026^2 + 294^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11334.

It is a super-2 number, since 2×256919112² = 132014860221737088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (256919119) 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 8 ways as a sum of consecutive naturals, for example, 135064 + ... + 136952.

Almost surely, 2^256919112 is an apocalyptic number.

It is an amenable number.

256919112 is an abundant number, since it is smaller than the sum of its proper divisors (439272033).

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

256919112 is an equidigital number, since it uses as much as digits as its factorization.

256919112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790 (or 1894 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 256919112 is about 16028.6965159367. The cubic root of 256919112 is about 635.7194086818.

The spelling of 256919112 in words is "two hundred fifty-six million, nine hundred nineteen thousand, one hundred twelve".