12153638 has 16 divisors (see below), whose sum is σ = 21129984. Its totient is φ = 5134920.

The previous prime is 12153619. The next prime is 12153653. The reversal of 12153638 is 83635121.

It is a self number, because there is not a number n which added to its sum of digits gives 12153638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5120 + ... + 7107.

It is an arithmetic number, because the mean of its divisors is an integer number (1320624).

Almost surely, 2^12153638 is an apocalyptic number.

12153638 is a deficient number, since it is larger than the sum of its proper divisors (8976346).

12153638 is a wasteful number, since it uses less digits than its factorization.

12153638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12307.

The product of its digits is 4320, while the sum is 29.

The square root of 12153638 is about 3486.2068211740. The cubic root of 12153638 is about 229.9157725618.

Adding to 12153638 its reverse (83635121), we get a palindrome (95788759).

The spelling of 12153638 in words is "twelve million, one hundred fifty-three thousand, six hundred thirty-eight".