20869044 has 24 divisors (see below), whose sum is σ = 55651008. Its totient is φ = 5962560.

The previous prime is 20869003. The next prime is 20869091. The reversal of 20869044 is 44096802.

It is a junction number, because it is equal to n+sod(n) for n = 20868996 and 20869014.

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, 124137 + ... + 124304.

It is an arithmetic number, because the mean of its divisors is an integer number (2318792).

Almost surely, 2^20869044 is an apocalyptic number.

It is an amenable number.

20869044 is an abundant number, since it is smaller than the sum of its proper divisors (34781964).

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

20869044 is a wasteful number, since it uses less digits than its factorization.

20869044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248455 (or 248453 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20869044 is about 4568.2648784850. The cubic root of 20869044 is about 275.3177330276.

The spelling of 20869044 in words is "twenty million, eight hundred sixty-nine thousand, forty-four".