20332656 has 30 divisors (see below), whose sum is σ = 56903600. Its totient is φ = 6777504.

The previous prime is 20332651. The next prime is 20332657. The reversal of 20332656 is 65623302.

20332656 is a `hidden beast` number, since 2 + 0 + 3 + 3 + 2 + 656 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70456 + ... + 70743.

Almost surely, 2^20332656 is an apocalyptic number.

It is an amenable number.

20332656 is an abundant number, since it is smaller than the sum of its proper divisors (36570944).

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

20332656 is a wasteful number, since it uses less digits than its factorization.

20332656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141213 (or 141204 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 20332656 is about 4509.1746473163. The cubic root of 20332656 is about 272.9384396073.

Adding to 20332656 its reverse (65623302), we get a palindrome (85955958).

The spelling of 20332656 in words is "twenty million, three hundred thirty-two thousand, six hundred fifty-six".