3256478715 has 16 divisors (see below), whose sum is σ = 5954704128. Its totient is φ = 1488675936.

The previous prime is 3256478683. The next prime is 3256478737. The reversal of 3256478715 is 5178746523.

It is not a de Polignac number, because 3256478715 - 2⁵ = 3256478683 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15506937 + ... + 15507146.

It is an arithmetic number, because the mean of its divisors is an integer number (372169008).

Almost surely, 2^3256478715 is an apocalyptic number.

3256478715 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3256478715 is a deficient number, since it is larger than the sum of its proper divisors (2698225413).

3256478715 is a wasteful number, since it uses less digits than its factorization.

3256478715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31014098.

The product of its digits is 1411200, while the sum is 48.

The square root of 3256478715 is about 57065.5650545931. The cubic root of 3256478715 is about 1482.2316459102.

The spelling of 3256478715 in words is "three billion, two hundred fifty-six million, four hundred seventy-eight thousand, seven hundred fifteen".