1258331228 has 96 divisors (see below), whose sum is σ = 3007549440. Its totient is φ = 445455360.

The previous prime is 1258331209. The next prime is 1258331233. The reversal of 1258331228 is 8221338521.

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, 147701 + ... + 155987.

It is an arithmetic number, because the mean of its divisors is an integer number (31328640).

Almost surely, 2^1258331228 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 1258331228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503774720).

1258331228 is an abundant number, since it is smaller than the sum of its proper divisors (1749218212).

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

1258331228 is a wasteful number, since it uses less digits than its factorization.

1258331228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355 (or 8353 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 1258331228 is about 35472.9647478189. The cubic root of 1258331228 is about 1079.6052592604.

Adding to 1258331228 its reverse (8221338521), we get a palindrome (9479669749).

The spelling of 1258331228 in words is "one billion, two hundred fifty-eight million, three hundred thirty-one thousand, two hundred twenty-eight".