20002194 has 16 divisors (see below), whose sum is σ = 44449440. Its totient is φ = 6667380.

The previous prime is 20002189. The next prime is 20002201. The reversal of 20002194 is 49120002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185152 + ... + 185259.

It is an arithmetic number, because the mean of its divisors is an integer number (2778090).

Almost surely, 2^20002194 is an apocalyptic number.

20002194 is an abundant number, since it is smaller than the sum of its proper divisors (24447246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20002194 is a wasteful number, since it uses less digits than its factorization.

20002194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370422 (or 370416 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20002194 is about 4472.3812449298. The cubic root of 20002194 is about 271.4516870170.

Adding to 20002194 its reverse (49120002), we get a palindrome (69122196).

The spelling of 20002194 in words is "twenty million, two thousand, one hundred ninety-four".