20984982 has 16 divisors (see below), whose sum is σ = 42037680. Its totient is φ = 6983712.

The previous prime is 20984963. The next prime is 20985001. The reversal of 20984982 is 28948902.

It is an interprime number because it is at equal distance from previous prime (20984963) and next prime (20985001).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1788 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (2627355).

Almost surely, 2^20984982 is an apocalyptic number.

20984982 is an abundant number, since it is smaller than the sum of its proper divisors (21052698).

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

20984982 is a wasteful number, since it uses less digits than its factorization.

20984982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 20984982 is about 4580.9368037553. The cubic root of 20984982 is about 275.8266344569.

The spelling of 20984982 in words is "twenty million, nine hundred eighty-four thousand, nine hundred eighty-two".