256458343 has 8 divisors (see below), whose sum is σ = 258223680. Its totient is φ = 254698080.

The previous prime is 256458341. The next prime is 256458373. The reversal of 256458343 is 343854652.

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

It is a cyclic number.

It is not a de Polignac number, because 256458343 - 2¹ = 256458341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256458296 and 256458305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256458341) 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, 178753 + ... + 180181.

It is an arithmetic number, because the mean of its divisors is an integer number (32277960).

Almost surely, 2^256458343 is an apocalyptic number.

256458343 is a deficient number, since it is larger than the sum of its proper divisors (1765337).

256458343 is a wasteful number, since it uses less digits than its factorization.

256458343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537.

The product of its digits is 345600, while the sum is 40.

The square root of 256458343 is about 16014.3168134017. The cubic root of 256458343 is about 635.3391397326.

The spelling of 256458343 in words is "two hundred fifty-six million, four hundred fifty-eight thousand, three hundred forty-three".