256896147 has 8 divisors (see below), whose sum is σ = 350494144. Its totient is φ = 167281128.

The previous prime is 256896139. The next prime is 256896151. The reversal of 256896147 is 741698652.

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

It is not a de Polignac number, because 256896147 - 2³ = 256896139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256896096 and 256896105.

It is not an unprimeable number, because it can be changed into a prime (256896137) 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, 995593 + ... + 995850.

It is an arithmetic number, because the mean of its divisors is an integer number (43811768).

Almost surely, 2^256896147 is an apocalyptic number.

256896147 is a deficient number, since it is larger than the sum of its proper divisors (93597997).

256896147 is a wasteful number, since it uses less digits than its factorization.

256896147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991489.

The product of its digits is 725760, while the sum is 48.

The square root of 256896147 is about 16027.9801285128. The cubic root of 256896147 is about 635.7004666224.

The spelling of 256896147 in words is "two hundred fifty-six million, eight hundred ninety-six thousand, one hundred forty-seven".