256103493 has 16 divisors (see below), whose sum is σ = 352960512. Its totient is φ = 165006000.

The previous prime is 256103447. The next prime is 256103503. The reversal of 256103493 is 394301652.

256103493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256103493 - 2⁶ = 256103429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256103293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94548 + ... + 97218.

It is an arithmetic number, because the mean of its divisors is an integer number (22060032).

Almost surely, 2^256103493 is an apocalyptic number.

It is an amenable number.

256103493 is a deficient number, since it is larger than the sum of its proper divisors (96857019).

256103493 is a wasteful number, since it uses less digits than its factorization.

256103493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 256103493 is about 16003.2338294483. The cubic root of 256103493 is about 635.0459743100.

The spelling of 256103493 in words is "two hundred fifty-six million, one hundred three thousand, four hundred ninety-three".