20516982 has 16 divisors (see below), whose sum is σ = 41433600. Its totient is φ = 6772392.

The previous prime is 20516953. The next prime is 20516999. The reversal of 20516982 is 28961502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15982 + ... + 17217.

It is an arithmetic number, because the mean of its divisors is an integer number (2589600).

Almost surely, 2^20516982 is an apocalyptic number.

20516982 is an abundant number, since it is smaller than the sum of its proper divisors (20916618).

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

20516982 is a wasteful number, since it uses less digits than its factorization.

20516982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33307.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 20516982 is about 4529.5675290253. The cubic root of 20516982 is about 273.7607355937.

The spelling of 20516982 in words is "twenty million, five hundred sixteen thousand, nine hundred eighty-two".