20982384 has 60 divisors (see below), whose sum is σ = 61820200. Its totient is φ = 6625152.

The previous prime is 20982359. The next prime is 20982389. The reversal of 20982384 is 48328902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20982389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1099 + ... + 6570.

Almost surely, 2^20982384 is an apocalyptic number.

20982384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20982384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30910100).

20982384 is an abundant number, since it is smaller than the sum of its proper divisors (40837816).

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

20982384 is a wasteful number, since it uses less digits than its factorization.

20982384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7702 (or 7693 counting only the distinct ones).

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

The square root of 20982384 is about 4580.6532285254. The cubic root of 20982384 is about 275.8152512818.

The spelling of 20982384 in words is "twenty million, nine hundred eighty-two thousand, three hundred eighty-four".