20982582 has 24 divisors (see below), whose sum is σ = 45666504. Its totient is φ = 6962784.

The previous prime is 20982569. The next prime is 20982613. The reversal of 20982582 is 28528902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1693 + ... + 6695.

It is an arithmetic number, because the mean of its divisors is an integer number (1902771).

Almost surely, 2^20982582 is an apocalyptic number.

20982582 is an abundant number, since it is smaller than the sum of its proper divisors (24683922).

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

20982582 is a wasteful number, since it uses less digits than its factorization.

20982582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244 (or 5241 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 20982582 is about 4580.6748411124. The cubic root of 20982582 is about 275.8161188548.

The spelling of 20982582 in words is "twenty million, nine hundred eighty-two thousand, five hundred eighty-two".