20132566 has 8 divisors (see below), whose sum is σ = 30218760. Its totient is φ = 10059648.

The previous prime is 20132513. The next prime is 20132569. The reversal of 20132566 is 66523102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20132566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550 + ... + 6838.

It is an arithmetic number, because the mean of its divisors is an integer number (3777345).

Almost surely, 2^20132566 is an apocalyptic number.

20132566 is a deficient number, since it is larger than the sum of its proper divisors (10086194).

20132566 is a wasteful number, since it uses less digits than its factorization.

20132566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20132566 is about 4486.9328053805. The cubic root of 20132566 is about 272.0401739248.

Adding to 20132566 its reverse (66523102), we get a palindrome (86655668).

The spelling of 20132566 in words is "twenty million, one hundred thirty-two thousand, five hundred sixty-six".