20656112 has 10 divisors (see below), whose sum is σ = 40021248. Its totient is φ = 10328048.

The previous prime is 20656081. The next prime is 20656117. The reversal of 20656112 is 21165602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20656117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645488 + ... + 645519.

Almost surely, 2^20656112 is an apocalyptic number.

It is an amenable number.

20656112 is a deficient number, since it is larger than the sum of its proper divisors (19365136).

20656112 is a wasteful number, since it uses less digits than its factorization.

20656112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291015 (or 1291009 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20656112 is about 4544.8995588462. The cubic root of 20656112 is about 274.3781519209.

The spelling of 20656112 in words is "twenty million, six hundred fifty-six thousand, one hundred twelve".