20030984 has 8 divisors (see below), whose sum is σ = 37558110. Its totient is φ = 10015488.

The previous prime is 20030957. The next prime is 20030987. The reversal of 20030984 is 48903002.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 228484 = 4450^2 + 478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20030987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251929 + ... + 1251944.

Almost surely, 2^20030984 is an apocalyptic number.

It is an amenable number.

20030984 is a deficient number, since it is larger than the sum of its proper divisors (17527126).

20030984 is a wasteful number, since it uses less digits than its factorization.

20030984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503879 (or 2503875 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20030984 is about 4475.5987308962. The cubic root of 20030984 is about 271.5818618624.

Adding to 20030984 its reverse (48903002), we get a palindrome (68933986).

The spelling of 20030984 in words is "twenty million, thirty thousand, nine hundred eighty-four".