2091204 has 72 divisors (see below), whose sum is σ = 5845280. Its totient is φ = 646272.

The previous prime is 2091191. The next prime is 2091211. The reversal of 2091204 is 4021902.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31179 + ... + 31245.

2^2091204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2091204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2922640).

2091204 is an abundant number, since it is smaller than the sum of its proper divisors (3754076).

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

2091204 is a wasteful number, since it uses less digits than its factorization.

2091204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2091204 is about 1446.0995816333. The cubic root of 2091204 is about 127.8788730434.

The spelling of 2091204 in words is "two million, ninety-one thousand, two hundred four".