20822057 has 8 divisors (see below), whose sum is σ = 21384000. Its totient is φ = 20266480.

The previous prime is 20822051. The next prime is 20822063. The reversal of 20822057 is 75022802.

It is an interprime number because it is at equal distance from previous prime (20822051) and next prime (20822063).

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 20822057 - 2¹⁶ = 20756521 is a prime.

It is a super-2 number, since 2×20822057² = 867116115422498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20822051) 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 7 ways as a sum of consecutive naturals, for example, 5444 + ... + 8442.

It is an arithmetic number, because the mean of its divisors is an integer number (2673000).

Almost surely, 2^20822057 is an apocalyptic number.

It is an amenable number.

20822057 is a deficient number, since it is larger than the sum of its proper divisors (561943).

20822057 is a wasteful number, since it uses less digits than its factorization.

20822057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20822057 is about 4563.1192182541. The cubic root of 20822057 is about 275.1109502718.

Adding to 20822057 its reverse (75022802), we get a palindrome (95844859).

The spelling of 20822057 in words is "twenty million, eight hundred twenty-two thousand, fifty-seven".