258881856 has 56 divisors (see below), whose sum is σ = 686165760. Its totient is φ = 86141952.

The previous prime is 258881851. The next prime is 258881879. The reversal of 258881856 is 658188852.

258881856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 258881799 and 258881808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258881851) 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, 179185 + ... + 180623.

It is an arithmetic number, because the mean of its divisors is an integer number (12252960).

Almost surely, 2^258881856 is an apocalyptic number.

It is an amenable number.

258881856 is an abundant number, since it is smaller than the sum of its proper divisors (427283904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258881856 is a wasteful number, since it uses less digits than its factorization.

258881856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391 (or 2381 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 51.

The square root of 258881856 is about 16089.8059652688. The cubic root of 258881856 is about 637.3341717085.

The spelling of 258881856 in words is "two hundred fifty-eight million, eight hundred eighty-one thousand, eight hundred fifty-six".