20822137 has 8 divisors (see below), whose sum is σ = 24377472. Its totient is φ = 17412000.

The previous prime is 20822101. The next prime is 20822143. The reversal of 20822137 is 73122802.

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 20822137 - 2²³ = 12433529 is a prime.

It is a super-2 number, since 2×20822137² = 867122778493538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20822177) 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, 35989 + ... + 36562.

It is an arithmetic number, because the mean of its divisors is an integer number (3047184).

Almost surely, 2^20822137 is an apocalyptic number.

It is an amenable number.

20822137 is a deficient number, since it is larger than the sum of its proper divisors (3555335).

20822137 is an equidigital number, since it uses as much as digits as its factorization.

20822137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72599.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20822137 is about 4563.1279841793. The cubic root of 20822137 is about 275.1113026041. Note that the first 3 decimals are identical.

Adding to 20822137 its reverse (73122802), we get a palindrome (93944939).

The spelling of 20822137 in words is "twenty million, eight hundred twenty-two thousand, one hundred thirty-seven".