20622171 has 8 divisors (see below), whose sum is σ = 27635200. Its totient is φ = 13678632.

The previous prime is 20622169. The next prime is 20622181. The reversal of 20622171 is 17122602.

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

It is not a de Polignac number, because 20622171 - 2¹ = 20622169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20622181) 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, 16675 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (3454400).

Almost surely, 2^20622171 is an apocalyptic number.

20622171 is a deficient number, since it is larger than the sum of its proper divisors (7013029).

20622171 is a wasteful number, since it uses less digits than its factorization.

20622171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34745.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20622171 is about 4541.1640578160. The cubic root of 20622171 is about 274.2277884481.

Adding to 20622171 its reverse (17122602), we get a palindrome (37744773).

The spelling of 20622171 in words is "twenty million, six hundred twenty-two thousand, one hundred seventy-one".