20136132 has 72 divisors (see below), whose sum is σ = 53936064. Its totient is φ = 6321216.

The previous prime is 20136119. The next prime is 20136167. The reversal of 20136132 is 23163102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68578 + ... + 68870.

It is an arithmetic number, because the mean of its divisors is an integer number (749112).

Almost surely, 2^20136132 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 20136132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26968032).

20136132 is an abundant number, since it is smaller than the sum of its proper divisors (33799932).

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

20136132 is a wasteful number, since it uses less digits than its factorization.

20136132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 20136132 is about 4487.3301639171. The cubic root of 20136132 is about 272.0562347685.

Adding to 20136132 its reverse (23163102), we get a palindrome (43299234).

The spelling of 20136132 in words is "twenty million, one hundred thirty-six thousand, one hundred thirty-two".