256254438 has 16 divisors (see below), whose sum is σ = 559100736. Its totient is φ = 77652840.

The previous prime is 256254437. The next prime is 256254491. The reversal of 256254438 is 834452652.

256254438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256254396 and 256254405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256254437) 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, 1941256 + ... + 1941387.

It is an arithmetic number, because the mean of its divisors is an integer number (34943796).

Almost surely, 2^256254438 is an apocalyptic number.

256254438 is an abundant number, since it is smaller than the sum of its proper divisors (302846298).

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

256254438 is a wasteful number, since it uses less digits than its factorization.

256254438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882659.

The product of its digits is 230400, while the sum is 39.

The square root of 256254438 is about 16007.9492128130. The cubic root of 256254438 is about 635.1707131896.

The spelling of 256254438 in words is "two hundred fifty-six million, two hundred fifty-four thousand, four hundred thirty-eight".