20418196 has 24 divisors (see below), whose sum is σ = 36388800. Its totient is φ = 10023552.

The previous prime is 20418193. The next prime is 20418199. The reversal of 20418196 is 69181402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20418193) and next prime (20418199).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20418193) 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 7 ways as a sum of consecutive naturals, for example, 89835 + ... + 90061.

It is an arithmetic number, because the mean of its divisors is an integer number (1516200).

Almost surely, 2^20418196 is an apocalyptic number.

It is an amenable number.

20418196 is a deficient number, since it is larger than the sum of its proper divisors (15970604).

20418196 is a wasteful number, since it uses less digits than its factorization.

20418196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 20418196 is about 4518.6497983358. The cubic root of 20418196 is about 273.3206570894.

Adding to 20418196 its reverse (69181402), we get a palindrome (89599598).

The spelling of 20418196 in words is "twenty million, four hundred eighteen thousand, one hundred ninety-six".