20984032 has 36 divisors (see below), whose sum is σ = 42547680. Its totient is φ = 10187136.

The previous prime is 20984021. The next prime is 20984039. The reversal of 20984032 is 23048902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20984039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43569 + ... + 44047.

It is an arithmetic number, because the mean of its divisors is an integer number (1181880).

Almost surely, 2^20984032 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 20984032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21273840).

20984032 is an abundant number, since it is smaller than the sum of its proper divisors (21563648).

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

20984032 is an equidigital number, since it uses as much as digits as its factorization.

20984032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20984032 is about 4580.8331120005. The cubic root of 20984032 is about 275.8224721269.

The spelling of 20984032 in words is "twenty million, nine hundred eighty-four thousand, thirty-two".