2108900 has 18 divisors (see below), whose sum is σ = 4576530. Its totient is φ = 843520.

The previous prime is 2108881. The next prime is 2108927. The reversal of 2108900 is 98012.

2108900 = T₈₇ + T₈₈ + ... + T₂₃₆.

It can be written as a sum of positive squares in 3 ways, for example, as 649636 + 1459264 = 806^2 + 1208^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10445 + ... + 10644.

2^2108900 is an apocalyptic number.

2108900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2108900 is an abundant number, since it is smaller than the sum of its proper divisors (2467630).

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

2108900 is a wasteful number, since it uses less digits than its factorization.

2108900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21103 (or 21096 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2108900 is about 1452.2052196573. The cubic root of 2108900 is about 128.2385687468.

The spelling of 2108900 in words is "two million, one hundred eight thousand, nine hundred".