20868696 has 24 divisors (see below), whose sum is σ = 56519580. Its totient is φ = 6956208.

The previous prime is 20868671. The next prime is 20868733. The reversal of 20868696 is 69686802.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144850 + ... + 144993.

Almost surely, 2^20868696 is an apocalyptic number.

It is an amenable number.

20868696 is an abundant number, since it is smaller than the sum of its proper divisors (35650884).

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

20868696 is a wasteful number, since it uses less digits than its factorization.

20868696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289855 (or 289848 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 20868696 is about 4568.2267894666. The cubic root of 20868696 is about 275.3162026732.

The spelling of 20868696 in words is "twenty million, eight hundred sixty-eight thousand, six hundred ninety-six".