20244186 has 48 divisors (see below), whose sum is σ = 46298304. Its totient is φ = 6380352.

The previous prime is 20244173. The next prime is 20244187. The reversal of 20244186 is 68144202.

It is not an unprimeable number, because it can be changed into a prime (20244187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44070 + ... + 44526.

It is an arithmetic number, because the mean of its divisors is an integer number (964548).

Almost surely, 2^20244186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20244186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23149152).

20244186 is an abundant number, since it is smaller than the sum of its proper divisors (26054118).

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

20244186 is a wasteful number, since it uses less digits than its factorization.

20244186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 20244186 is about 4499.3539536249. The cubic root of 20244186 is about 272.5420006523.

Adding to 20244186 its reverse (68144202), we get a palindrome (88388388).

The spelling of 20244186 in words is "twenty million, two hundred forty-four thousand, one hundred eighty-six".