20786044 has 6 divisors (see below), whose sum is σ = 36375584. Its totient is φ = 10393020.

The previous prime is 20786041. The next prime is 20786047. The reversal of 20786044 is 44068702.

It is an interprime number because it is at equal distance from previous prime (20786041) and next prime (20786047).

It is a junction number, because it is equal to n+sod(n) for n = 20785997 and 20786015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20786041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2598252 + ... + 2598259.

Almost surely, 2^20786044 is an apocalyptic number.

It is an amenable number.

20786044 is a deficient number, since it is larger than the sum of its proper divisors (15589540).

20786044 is a wasteful number, since it uses less digits than its factorization.

20786044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196515 (or 5196513 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 20786044 is about 4559.1714159483. The cubic root of 20786044 is about 274.9522517651.

The spelling of 20786044 in words is "twenty million, seven hundred eighty-six thousand, forty-four".