258228450 has 144 divisors (see below), whose sum is σ = 727024896. Its totient is φ = 65635200.

The previous prime is 258228437. The next prime is 258228457. The reversal of 258228450 is 54822852.

258228450 is a `hidden beast` number, since 2 + 582 + 28 + 4 + 50 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (258228457) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1492564 + ... + 1492736.

It is an arithmetic number, because the mean of its divisors is an integer number (5048784).

Almost surely, 2^258228450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258228450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363512448).

258228450 is an abundant number, since it is smaller than the sum of its proper divisors (468796446).

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

258228450 is a wasteful number, since it uses less digits than its factorization.

258228450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 258228450 is about 16069.4881685759. The cubic root of 258228450 is about 636.7975191634.

The spelling of 258228450 in words is "two hundred fifty-eight million, two hundred twenty-eight thousand, four hundred fifty".