256073843 has 4 divisors (see below), whose sum is σ = 256234800. Its totient is φ = 255912888.

The previous prime is 256073821. The next prime is 256073861. The reversal of 256073843 is 348370652.

256073843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256073843 - 2²² = 251879539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256073797 and 256073806.

It is not an unprimeable number, because it can be changed into a prime (256073863) 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, 78068 + ... + 81281.

It is an arithmetic number, because the mean of its divisors is an integer number (64058700).

Almost surely, 2^256073843 is an apocalyptic number.

256073843 is a deficient number, since it is larger than the sum of its proper divisors (160957).

256073843 is a wasteful number, since it uses less digits than its factorization.

256073843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160956.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 256073843 is about 16002.3074273681. The cubic root of 256073843 is about 635.0214661973.

The spelling of 256073843 in words is "two hundred fifty-six million, seventy-three thousand, eight hundred forty-three".