258116814 has 64 divisors (see below), whose sum is σ = 609638400. Its totient is φ = 80671104.

The previous prime is 258116801. The next prime is 258116839. The reversal of 258116814 is 418611852.

258116814 is a `hidden beast` number, since 2 + 581 + 1 + 68 + 14 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 439429 + ... + 440015.

It is an arithmetic number, because the mean of its divisors is an integer number (9525600).

Almost surely, 2^258116814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258116814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304819200).

258116814 is an abundant number, since it is smaller than the sum of its proper divisors (351521586).

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

258116814 is a wasteful number, since it uses less digits than its factorization.

258116814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1088 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 258116814 is about 16066.0142536972. The cubic root of 258116814 is about 636.7057402564.

The spelling of 258116814 in words is "two hundred fifty-eight million, one hundred sixteen thousand, eight hundred fourteen".