20000432 has 60 divisors (see below), whose sum is σ = 43200360. Its totient is φ = 8937984.

The previous prime is 20000429. The next prime is 20000443. The reversal of 20000432 is 23400002.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 143819 + ... + 143957.

It is an arithmetic number, because the mean of its divisors is an integer number (720006).

Almost surely, 2^20000432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21600180).

20000432 is an abundant number, since it is smaller than the sum of its proper divisors (23199928).

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

20000432 is a wasteful number, since it uses less digits than its factorization.

20000432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20000432 is about 4472.1842538071. The cubic root of 20000432 is about 271.4437160261.

Adding to 20000432 its reverse (23400002), we get a palindrome (43400434).

The spelling of 20000432 in words is "twenty million, four hundred thirty-two", and thus it is an aban number.