20984044 has 6 divisors (see below), whose sum is σ = 36722084. Its totient is φ = 10492020.

The previous prime is 20984039. The next prime is 20984071. The reversal of 20984044 is 44048902.

It is a junction number, because it is equal to n+sod(n) for n = 20983997 and 20984015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2623002 + ... + 2623009.

Almost surely, 2^20984044 is an apocalyptic number.

It is an amenable number.

20984044 is a deficient number, since it is larger than the sum of its proper divisors (15738040).

20984044 is a wasteful number, since it uses less digits than its factorization.

20984044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5246015 (or 5246013 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20984044 is about 4580.8344218057. The cubic root of 20984044 is about 275.8225247045.

It can be divided in two parts, 20 and 984044, that added together give a square (984064 = 992²).

The spelling of 20984044 in words is "twenty million, nine hundred eighty-four thousand, forty-four".