20869026 has 16 divisors (see below), whose sum is σ = 42361824. Its totient is φ = 6852384.

The previous prime is 20869003. The next prime is 20869091. The reversal of 20869026 is 62096802.

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, 25555 + ... + 26358.

It is an arithmetic number, because the mean of its divisors is an integer number (2647614).

Almost surely, 2^20869026 is an apocalyptic number.

20869026 is an abundant number, since it is smaller than the sum of its proper divisors (21492798).

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

20869026 is a wasteful number, since it uses less digits than its factorization.

20869026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51985.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20869026 is about 4568.2629083712. The cubic root of 20869026 is about 275.3176538718.

The spelling of 20869026 in words is "twenty million, eight hundred sixty-nine thousand, twenty-six".