20869038 has 24 divisors (see below), whose sum is σ = 46776600. Its totient is φ = 6716304.

The previous prime is 20869003. The next prime is 20869091. The reversal of 20869038 is 83096802.

It is a junction number, because it is equal to n+sod(n) for n = 20868993 and 20869011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19468 + ... + 20511.

It is an arithmetic number, because the mean of its divisors is an integer number (1949025).

Almost surely, 2^20869038 is an apocalyptic number.

20869038 is an abundant number, since it is smaller than the sum of its proper divisors (25907562).

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

20869038 is a wasteful number, since it uses less digits than its factorization.

20869038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40016 (or 40013 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20869038 is about 4568.2642217805. The cubic root of 20869038 is about 275.3177066424.

The spelling of 20869038 in words is "twenty million, eight hundred sixty-nine thousand, thirty-eight".