20418192 has 30 divisors (see below), whose sum is σ = 57142982. Its totient is φ = 6806016.

The previous prime is 20418187. The next prime is 20418193. The reversal of 20418192 is 29181402.

It can be written as a sum of positive squares in only one way, i.e., 16353936 + 4064256 = 4044^2 + 2016^2 .

It is not an unprimeable number, because it can be changed into a prime (20418193) 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, 70753 + ... + 71040.

Almost surely, 2^20418192 is an apocalyptic number.

It is an amenable number.

20418192 is an abundant number, since it is smaller than the sum of its proper divisors (36724790).

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

20418192 is a wasteful number, since it uses less digits than its factorization.

20418192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141807 (or 141798 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 20418192 is about 4518.6493557257. The cubic root of 20418192 is about 273.3206392413.

Adding to 20418192 its reverse (29181402), we get a palindrome (49599594).

The spelling of 20418192 in words is "twenty million, four hundred eighteen thousand, one hundred ninety-two".