12253638 has 8 divisors (see below), whose sum is σ = 24507288. Its totient is φ = 4084544.

The previous prime is 12253621. The next prime is 12253639. The reversal of 12253638 is 83635221.

It is a sphenic number, since it is the product of 3 distinct primes.

12253638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12253639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021131 + ... + 1021142.

It is an arithmetic number, because the mean of its divisors is an integer number (3063411).

Almost surely, 2^12253638 is an apocalyptic number.

12253638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12253638 is a wasteful number, since it uses less digits than its factorization.

12253638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042278.

The product of its digits is 8640, while the sum is 30.

The square root of 12253638 is about 3500.5196757053. The cubic root of 12253638 is about 230.5446324357.

Adding to 12253638 its reverse (83635221), we get a palindrome (95888859).

The spelling of 12253638 in words is "twelve million, two hundred fifty-three thousand, six hundred thirty-eight".