20848171 has 6 divisors (see below), whose sum is σ = 22146980. Its totient is φ = 19621536.

The previous prime is 20848147. The next prime is 20848199. The reversal of 20848171 is 17184802.

It is not a de Polignac number, because 20848171 - 2⁷ = 20848043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20848571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35781 + ... + 36358.

Almost surely, 2^20848171 is an apocalyptic number.

20848171 is a deficient number, since it is larger than the sum of its proper divisors (1298809).

20848171 is an equidigital number, since it uses as much as digits as its factorization.

20848171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72173 (or 72156 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 20848171 is about 4565.9797415232. The cubic root of 20848171 is about 275.2259124338.

The spelling of 20848171 in words is "twenty million, eight hundred forty-eight thousand, one hundred seventy-one".