20822807 has 8 divisors (see below), whose sum is σ = 22099392. Its totient is φ = 19552000.

The previous prime is 20822717. The next prime is 20822821. The reversal of 20822807 is 70822802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20822807 - 2¹⁸ = 20560663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20822807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20822887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7682 + ... + 10032.

It is an arithmetic number, because the mean of its divisors is an integer number (2762424).

Almost surely, 2^20822807 is an apocalyptic number.

20822807 is a deficient number, since it is larger than the sum of its proper divisors (1276585).

20822807 is a wasteful number, since it uses less digits than its factorization.

20822807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20822807 is about 4563.2013981414. The cubic root of 20822807 is about 275.1142533514.

The spelling of 20822807 in words is "twenty million, eight hundred twenty-two thousand, eight hundred seven".