20868088 has 16 divisors (see below), whose sum is σ = 39712680. Its totient is φ = 10278048.

The previous prime is 20868079. The next prime is 20868091. The reversal of 20868088 is 88086802.

It is a self number, because there is not a number n which added to its sum of digits gives 20868088.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18931 + ... + 20002.

Almost surely, 2^20868088 is an apocalyptic number.

It is an amenable number.

20868088 is a deficient number, since it is larger than the sum of its proper divisors (18844592).

20868088 is a wasteful number, since it uses less digits than its factorization.

20868088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39006 (or 39002 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 20868088 is about 4568.1602423733. The cubic root of 20868088 is about 275.3135289096.

The spelling of 20868088 in words is "twenty million, eight hundred sixty-eight thousand, eighty-eight".