20027136 has 72 divisors (see below), whose sum is σ = 54084240. Its totient is φ = 6578176.

The previous prime is 20027131. The next prime is 20027177. The reversal of 20027136 is 63172002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20027131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68206 + ... + 68498.

It is an arithmetic number, because the mean of its divisors is an integer number (751170).

Almost surely, 2^20027136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20027136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27042120).

20027136 is an abundant number, since it is smaller than the sum of its proper divisors (34057104).

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

20027136 is an equidigital number, since it uses as much as digits as its factorization.

20027136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20027136 is about 4475.1688236311. The cubic root of 20027136 is about 271.5644702400.

Adding to 20027136 its reverse (63172002), we get a palindrome (83199138).

The spelling of 20027136 in words is "twenty million, twenty-seven thousand, one hundred thirty-six".