2209900 has 108 divisors (see below), whose sum is σ = 6233976. Its totient is φ = 672000.

The previous prime is 2209891. The next prime is 2209901. The reversal of 2209900 is 99022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2209901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 53880 + ... + 53920.

It is an arithmetic number, because the mean of its divisors is an integer number (57722).

2^2209900 is an apocalyptic number.

2209900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2209900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3116988).

2209900 is an abundant number, since it is smaller than the sum of its proper divisors (4024076).

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

2209900 is a wasteful number, since it uses less digits than its factorization.

2209900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2209900 is about 1486.5732407117. The cubic root of 2209900 is about 130.2539414985.

It can be divided in two parts, 2209 and 900, that multiplied together give a square (1988100 = 1410²).

The spelling of 2209900 in words is "two million, two hundred nine thousand, nine hundred".