20834982 has 80 divisors (see below), whose sum is σ = 56221440. Its totient is φ = 5633712.

The previous prime is 20834981. The next prime is 20835037. The reversal of 20834982 is 28943802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20834981) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21063 + ... + 22029.

It is an arithmetic number, because the mean of its divisors is an integer number (702768).

Almost surely, 2^20834982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20834982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28110720).

20834982 is an abundant number, since it is smaller than the sum of its proper divisors (35386458).

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

20834982 is a wasteful number, since it uses less digits than its factorization.

20834982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 20834982 is about 4564.5352446881. The cubic root of 20834982 is about 275.1678622529.

The spelling of 20834982 in words is "twenty million, eight hundred thirty-four thousand, nine hundred eighty-two".