20838768 has 20 divisors (see below), whose sum is σ = 53833608. Its totient is φ = 6946240.

The previous prime is 20838757. The next prime is 20838781. The reversal of 20838768 is 86783802.

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, 217023 + ... + 217118.

Almost surely, 2^20838768 is an apocalyptic number.

It is an amenable number.

20838768 is an abundant number, since it is smaller than the sum of its proper divisors (32994840).

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

20838768 is a wasteful number, since it uses less digits than its factorization.

20838768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434152 (or 434146 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 20838768 is about 4564.9499449611. The cubic root of 20838768 is about 275.1845284929.

The spelling of 20838768 in words is "twenty million, eight hundred thirty-eight thousand, seven hundred sixty-eight".