256103386 has 16 divisors (see below), whose sum is σ = 478946880. Its totient is φ = 99780480.

The previous prime is 256103363. The next prime is 256103387. The reversal of 256103386 is 683301652.

It is not an unprimeable number, because it can be changed into a prime (256103387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831351 + ... + 831658.

It is an arithmetic number, because the mean of its divisors is an integer number (29934180).

Almost surely, 2^256103386 is an apocalyptic number.

256103386 is a deficient number, since it is larger than the sum of its proper divisors (222843494).

256103386 is a wasteful number, since it uses less digits than its factorization.

256103386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663029.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 256103386 is about 16003.2304863737. The cubic root of 256103386 is about 635.0458858693.

The spelling of 256103386 in words is "two hundred fifty-six million, one hundred three thousand, three hundred eighty-six".