256448938 has 8 divisors (see below), whose sum is σ = 384956100. Its totient is φ = 128130240.

The previous prime is 256448923. The next prime is 256448939. The reversal of 256448938 is 839844652.

256448938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 252396769 + 4052169 = 15887^2 + 2013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 256448891 and 256448900.

It is not an unprimeable number, because it can be changed into a prime (256448939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43663 + ... + 49186.

Almost surely, 2^256448938 is an apocalyptic number.

256448938 is a deficient number, since it is larger than the sum of its proper divisors (128507162).

256448938 is a wasteful number, since it uses less digits than its factorization.

256448938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94232.

The product of its digits is 1658880, while the sum is 49.

The square root of 256448938 is about 16014.0231672119. The cubic root of 256448938 is about 635.3313731201.

The spelling of 256448938 in words is "two hundred fifty-six million, four hundred forty-eight thousand, nine hundred thirty-eight".