12285858 has 32 divisors (see below), whose sum is σ = 27320832. Its totient is φ = 3657600.

The previous prime is 12285851. The next prime is 12285859. The reversal of 12285858 is 85858221.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12285851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (853776).

Almost surely, 2^12285858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12285858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13660416).

12285858 is an abundant number, since it is smaller than the sum of its proper divisors (15034974).

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

12285858 is a wasteful number, since it uses less digits than its factorization.

12285858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130.

The product of its digits is 51200, while the sum is 39.

The square root of 12285858 is about 3505.1188282282. The cubic root of 12285858 is about 230.7465220560.

The spelling of 12285858 in words is "twelve million, two hundred eighty-five thousand, eight hundred fifty-eight".