20105032 has 16 divisors (see below), whose sum is σ = 37891260. Its totient is φ = 10000704.

The previous prime is 20105009. The next prime is 20105039. The reversal of 20105032 is 23050102.

It can be written as a sum of positive squares in 2 ways, for example, as 17589636 + 2515396 = 4194^2 + 1586^2 .

It is not an unprimeable number, because it can be changed into a prime (20105039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4803 + ... + 7954.

Almost surely, 2^20105032 is an apocalyptic number.

It is an amenable number.

20105032 is a deficient number, since it is larger than the sum of its proper divisors (17786228).

20105032 is a wasteful number, since it uses less digits than its factorization.

20105032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12960 (or 12956 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20105032 is about 4483.8635126417. The cubic root of 20105032 is about 271.9161001325.

Adding to 20105032 its reverse (23050102), we get a palindrome (43155134).

The spelling of 20105032 in words is "twenty million, one hundred five thousand, thirty-two".