258012228 has 24 divisors (see below), whose sum is σ = 602521920. Its totient is φ = 85933600.

The previous prime is 258012173. The next prime is 258012253. The reversal of 258012228 is 822210852.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 258012195 and 258012204.

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 7 ways as a sum of consecutive naturals, for example, 7678 + ... + 23978.

It is an arithmetic number, because the mean of its divisors is an integer number (25105080).

Almost surely, 2^258012228 is an apocalyptic number.

It is an amenable number.

258012228 is an abundant number, since it is smaller than the sum of its proper divisors (344509692).

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

258012228 is a wasteful number, since it uses less digits than its factorization.

258012228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17627 (or 17625 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 258012228 is about 16062.7590407128. The cubic root of 258012228 is about 636.6197333287.

The spelling of 258012228 in words is "two hundred fifty-eight million, twelve thousand, two hundred twenty-eight".