20332432 has 20 divisors (see below), whose sum is σ = 41468080. Its totient is φ = 9631008.

The previous prime is 20332409. The next prime is 20332439. The reversal of 20332432 is 23423302.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (20332439) 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, 33138 + ... + 33745.

It is an arithmetic number, because the mean of its divisors is an integer number (2073404).

Almost surely, 2^20332432 is an apocalyptic number.

It is an amenable number.

20332432 is an abundant number, since it is smaller than the sum of its proper divisors (21135648).

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

20332432 is a wasteful number, since it uses less digits than its factorization.

20332432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66910 (or 66904 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20332432 is about 4509.1498089995. The cubic root of 20332432 is about 272.9374373045.

Adding to 20332432 its reverse (23423302), we get a palindrome (43755734).

It can be divided in two parts, 2033 and 2432, that added together give a triangular number (4465 = T₉₄).

The spelling of 20332432 in words is "twenty million, three hundred thirty-two thousand, four hundred thirty-two".