20927636 has 24 divisors (see below), whose sum is σ = 37497600. Its totient is φ = 10216800.

The previous prime is 20927609. The next prime is 20927639. The reversal of 20927636 is 63672902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20927596 and 20927605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20927639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48341 + ... + 48771.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^20927636 is an apocalyptic number.

It is an amenable number.

20927636 is a deficient number, since it is larger than the sum of its proper divisors (16569964).

20927636 is a wasteful number, since it uses less digits than its factorization.

20927636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20927636 is about 4574.6733216701. The cubic root of 20927636 is about 275.5751532724.

The spelling of 20927636 in words is "twenty million, nine hundred twenty-seven thousand, six hundred thirty-six".