258256347 has 8 divisors (see below), whose sum is σ = 344856144. Its totient is φ = 171913728.

The previous prime is 258256321. The next prime is 258256363. The reversal of 258256347 is 743652852.

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

It is not a de Polignac number, because 258256347 - 2⁶ = 258256283 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 258256299 and 258256308.

It is not an unprimeable number, because it can be changed into a prime (258256147) 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, 61938 + ... + 65975.

It is an arithmetic number, because the mean of its divisors is an integer number (43107018).

Almost surely, 2^258256347 is an apocalyptic number.

258256347 is a deficient number, since it is larger than the sum of its proper divisors (86599797).

258256347 is a wasteful number, since it uses less digits than its factorization.

258256347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128589.

The product of its digits is 403200, while the sum is 42.

The square root of 258256347 is about 16070.3561566009. The cubic root of 258256347 is about 636.8204498935.

The spelling of 258256347 in words is "two hundred fifty-eight million, two hundred fifty-six thousand, three hundred forty-seven".