20663112 has 32 divisors (see below), whose sum is σ = 53326080. Its totient is φ = 6665280.

The previous prime is 20663107. The next prime is 20663147. The reversal of 20663112 is 21136602.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13143 + ... + 14630.

It is an arithmetic number, because the mean of its divisors is an integer number (1666440).

Almost surely, 2^20663112 is an apocalyptic number.

It is an amenable number.

20663112 is an abundant number, since it is smaller than the sum of its proper divisors (32662968).

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

20663112 is a wasteful number, since it uses less digits than its factorization.

20663112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27813 (or 27809 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20663112 is about 4545.6695876405. The cubic root of 20663112 is about 274.4091424279.

Adding to 20663112 its reverse (21136602), we get a palindrome (41799714).

The spelling of 20663112 in words is "twenty million, six hundred sixty-three thousand, one hundred twelve".