258671812 has 48 divisors (see below), whose sum is σ = 543191040. Its totient is φ = 105444000.

The previous prime is 258671801. The next prime is 258671857. The reversal of 258671812 is 218176852.

It is a super-2 number, since 2×258671812² = 133822212646726688, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48687 + ... + 53737.

It is an arithmetic number, because the mean of its divisors is an integer number (11316480).

Almost surely, 2^258671812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258671812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271595520).

258671812 is an abundant number, since it is smaller than the sum of its proper divisors (284519228).

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

258671812 is a wasteful number, since it uses less digits than its factorization.

258671812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152 (or 5150 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 258671812 is about 16083.2774023207. The cubic root of 258671812 is about 637.1617578748.

The spelling of 258671812 in words is "two hundred fifty-eight million, six hundred seventy-one thousand, eight hundred twelve".