258645228 has 24 divisors (see below), whose sum is σ = 609045360. Its totient is φ = 85423680.

The previous prime is 258645217. The next prime is 258645239. The reversal of 258645228 is 822546852.

It is an interprime number because it is at equal distance from previous prime (258645217) and next prime (258645239).

It is a self number, because there is not a number n which added to its sum of digits gives 258645228.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97563 + ... + 100178.

It is an arithmetic number, because the mean of its divisors is an integer number (25376890).

Almost surely, 2^258645228 is an apocalyptic number.

It is an amenable number.

258645228 is an abundant number, since it is smaller than the sum of its proper divisors (350400132).

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

258645228 is a wasteful number, since it uses less digits than its factorization.

258645228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197857 (or 197855 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 258645228 is about 16082.4509326160. The cubic root of 258645228 is about 637.1399298445.

The spelling of 258645228 in words is "two hundred fifty-eight million, six hundred forty-five thousand, two hundred twenty-eight".