12220732 has 12 divisors (see below), whose sum is σ = 21528976. Its totient is φ = 6069600.

The previous prime is 12220721. The next prime is 12220757. The reversal of 12220732 is 23702221.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 9513 + ... + 10720.

Almost surely, 2^12220732 is an apocalyptic number.

It is an amenable number.

12220732 is a deficient number, since it is larger than the sum of its proper divisors (9308244).

12220732 is a wasteful number, since it uses less digits than its factorization.

12220732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20388 (or 20386 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 12220732 is about 3495.8163567327. The cubic root of 12220732 is about 230.3380787414.

Adding to 12220732 its reverse (23702221), we get a palindrome (35922953).

The spelling of 12220732 in words is "twelve million, two hundred twenty thousand, seven hundred thirty-two".