20982020 has 12 divisors (see below), whose sum is σ = 44062284. Its totient is φ = 8392800.

The previous prime is 20982019. The next prime is 20982041. The reversal of 20982020 is 2028902.

It can be written as a sum of positive squares in 2 ways, for example, as 5125696 + 15856324 = 2264^2 + 3982^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524531 + ... + 524570.

It is an arithmetic number, because the mean of its divisors is an integer number (3671857).

Almost surely, 2^20982020 is an apocalyptic number.

20982020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20982020 is an abundant number, since it is smaller than the sum of its proper divisors (23080264).

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

20982020 is a wasteful number, since it uses less digits than its factorization.

20982020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049110 (or 1049108 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20982020 is about 4580.6134960287. The cubic root of 20982020 is about 275.8136563355.

The spelling of 20982020 in words is "twenty million, nine hundred eighty-two thousand, twenty".