20766936 has 32 divisors (see below), whose sum is σ = 53127360. Its totient is φ = 6760992.

The previous prime is 20766919. The next prime is 20766947. The reversal of 20766936 is 63966702.

It is a junction number, because it is equal to n+sod(n) for n = 20766894 and 20766903.

It is a congruent 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, 9030 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (1660230).

Almost surely, 2^20766936 is an apocalyptic number.

It is an amenable number.

20766936 is an abundant number, since it is smaller than the sum of its proper divisors (32360424).

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

20766936 is a wasteful number, since it uses less digits than its factorization.

20766936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20175 (or 20171 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 20766936 is about 4557.0753779151. The cubic root of 20766936 is about 274.8679740908.

The spelling of 20766936 in words is "twenty million, seven hundred sixty-six thousand, nine hundred thirty-six".