20983100 has 36 divisors (see below), whose sum is σ = 48215664. Its totient is φ = 7898880.

The previous prime is 20983099. The next prime is 20983121. The reversal of 20983100 is 138902.

It is a super-2 number, since 2×20983100² = 880580971220000, which contains 22 as substring.

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, 4472 + ... + 7871.

It is an arithmetic number, because the mean of its divisors is an integer number (1339324).

Almost surely, 2^20983100 is an apocalyptic number.

20983100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20983100 is an abundant number, since it is smaller than the sum of its proper divisors (27232564).

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

20983100 is a wasteful number, since it uses less digits than its factorization.

20983100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12374 (or 12367 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20983100 is about 4580.7313826506. The cubic root of 20983100 is about 275.8183885401.

The spelling of 20983100 in words is "twenty million, nine hundred eighty-three thousand, one hundred".