20440132 has 24 divisors (see below), whose sum is σ = 37001664. Its totient is φ = 9872352.

The previous prime is 20440111. The next prime is 20440151. The reversal of 20440132 is 23104402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24303 + ... + 25129.

It is an arithmetic number, because the mean of its divisors is an integer number (1541736).

Almost surely, 2^20440132 is an apocalyptic number.

It is an amenable number.

20440132 is a deficient number, since it is larger than the sum of its proper divisors (16561532).

20440132 is a wasteful number, since it uses less digits than its factorization.

20440132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20440132 is about 4521.0764204999. The cubic root of 20440132 is about 273.4185014522.

Adding to 20440132 its reverse (23104402), we get a palindrome (43544534).

The spelling of 20440132 in words is "twenty million, four hundred forty thousand, one hundred thirty-two".