12022638 has 32 divisors (see below), whose sum is σ = 25608960. Its totient is φ = 3749760.

The previous prime is 12022613. The next prime is 12022639. The reversal of 12022638 is 83622021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022639) 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, 31533 + ... + 31911.

It is an arithmetic number, because the mean of its divisors is an integer number (800280).

Almost surely, 2^12022638 is an apocalyptic number.

12022638 is an abundant number, since it is smaller than the sum of its proper divisors (13586322).

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

12022638 is a wasteful number, since it uses less digits than its factorization.

12022638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 12022638 is about 3467.3675893969. The cubic root of 12022638 is about 229.0867249688.

Adding to 12022638 its reverse (83622021), we get a palindrome (95644659).

The spelling of 12022638 in words is "twelve million, twenty-two thousand, six hundred thirty-eight".