20982504 has 16 divisors (see below), whose sum is σ = 52456320. Its totient is φ = 6994160.

The previous prime is 20982503. The next prime is 20982553. The reversal of 20982504 is 40528902.

It is a super-2 number, since 2×20982504² = 880530948220032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20982503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437112 + ... + 437159.

It is an arithmetic number, because the mean of its divisors is an integer number (3278520).

Almost surely, 2^20982504 is an apocalyptic number.

20982504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20982504 is an abundant number, since it is smaller than the sum of its proper divisors (31473816).

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

20982504 is a wasteful number, since it uses less digits than its factorization.

20982504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874280 (or 874276 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20982504 is about 4580.6663270751. Note that the first 3 decimals coincide. The cubic root of 20982504 is about 275.8157770843.

The spelling of 20982504 in words is "twenty million, nine hundred eighty-two thousand, five hundred four".