20859692 has 18 divisors (see below), whose sum is σ = 42464772. Its totient is φ = 8939784.

The previous prime is 20859691. The next prime is 20859719. The reversal of 20859692 is 29695802.

It is not an unprimeable number, because it can be changed into a prime (20859691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53018 + ... + 53409.

It is an arithmetic number, because the mean of its divisors is an integer number (2359154).

Almost surely, 2^20859692 is an apocalyptic number.

It is an amenable number.

20859692 is an abundant number, since it is smaller than the sum of its proper divisors (21605080).

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

20859692 is a wasteful number, since it uses less digits than its factorization.

20859692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106445 (or 106436 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 20859692 is about 4567.2411804064. The cubic root of 20859692 is about 275.2766010342.

The spelling of 20859692 in words is "twenty million, eight hundred fifty-nine thousand, six hundred ninety-two".