20000032 has 48 divisors (see below), whose sum is σ = 42844032. Its totient is φ = 9135360.

The previous prime is 20000023. The next prime is 20000033. The reversal of 20000032 is 23000002.

It is not an unprimeable number, because it can be changed into a prime (20000033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54313 + ... + 54679.

It is an arithmetic number, because the mean of its divisors is an integer number (892584).

Almost surely, 2^20000032 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 20000032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21422016).

20000032 is an abundant number, since it is smaller than the sum of its proper divisors (22844000).

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

20000032 is a wasteful number, since it uses less digits than its factorization.

20000032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 20000032 is about 4472.1395327069. The cubic root of 20000032 is about 271.4419064284.

Adding to 20000032 its reverse (23000002), we get a palindrome (43000034).

The spelling of 20000032 in words is "twenty million, thirty-two", and thus it is an aban number and an uban number.