12220432 has 20 divisors (see below), whose sum is σ = 27059776. Its totient is φ = 5237280.

The previous prime is 12220427. The next prime is 12220441. The reversal of 12220432 is 23402221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54444 + ... + 54667.

Almost surely, 2^12220432 is an apocalyptic number.

It is an amenable number.

12220432 is an abundant number, since it is smaller than the sum of its proper divisors (14839344).

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

12220432 is a wasteful number, since it uses less digits than its factorization.

12220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109126 (or 109120 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12220432 is about 3495.7734480369. The cubic root of 12220432 is about 230.3361939119.

Adding to 12220432 its reverse (23402221), we get a palindrome (35622653).

The spelling of 12220432 in words is "twelve million, two hundred twenty thousand, four hundred thirty-two".