20011132 has 12 divisors (see below), whose sum is σ = 35051296.
Its totient is φ = 9996480.
The previous prime is 20011099. The next prime is 20011139. The reversal of 20011132 is 23111002.
Adding to 20011132 its reverse (23111002), we get a palindrome (43122134).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20011139) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6157 + ... + 8827.
Almost surely, 220011132 is an apocalyptic number.
It is an amenable number.
20011132 is a deficient number, since it is larger than the sum of its proper divisors (15040164).
20011132 is a wasteful number, since it uses less digits than its factorization.
20011132 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4548 (or 4546 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 10.
The square root of 20011132 is about 4473.3803772986.
The cubic root of 20011132 is about 271.4921138135.
The spelling of 20011132 in words is "twenty million, eleven thousand, one hundred thirty-two".