256111434 has 12 divisors (see below), whose sum is σ = 554908146. Its totient is φ = 85370472.

The previous prime is 256111433. The next prime is 256111439. The reversal of 256111434 is 434111652.

It is a happy number.

256111434 is a `hidden beast` number, since 2 + 5 + 611 + 1 + 43 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 197543025 + 58568409 = 14055^2 + 7653^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256111398 and 256111407.

It is not an unprimeable number, because it can be changed into a prime (256111433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7114189 + ... + 7114224.

Almost surely, 2^256111434 is an apocalyptic number.

256111434 is an abundant number, since it is smaller than the sum of its proper divisors (298796712).

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

256111434 is a wasteful number, since it uses less digits than its factorization.

256111434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14228421 (or 14228418 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 256111434 is about 16003.4819336293. The cubic root of 256111434 is about 635.0525378648.

The spelling of 256111434 in words is "two hundred fifty-six million, one hundred eleven thousand, four hundred thirty-four".