20294171 has 12 divisors (see below), whose sum is σ = 21426600. Its totient is φ = 19215168.

The previous prime is 20294161. The next prime is 20294173. The reversal of 20294171 is 17149202.

It is a de Polignac number, because none of the positive numbers 2^k-20294171 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 20294171.

It is not an unprimeable number, because it can be changed into a prime (20294173) 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 11 ways as a sum of consecutive naturals, for example, 49415 + ... + 49823.

It is an arithmetic number, because the mean of its divisors is an integer number (1785550).

Almost surely, 2^20294171 is an apocalyptic number.

20294171 is a deficient number, since it is larger than the sum of its proper divisors (1132429).

20294171 is an equidigital number, since it uses as much as digits as its factorization.

20294171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 20294171 is about 4504.9052154291. The cubic root of 20294171 is about 272.7661278008.

The spelling of 20294171 in words is "twenty million, two hundred ninety-four thousand, one hundred seventy-one".