2201904 has 50 divisors (see below), whose sum is σ = 6376700. Its totient is φ = 733536.

The previous prime is 2201897. The next prime is 2201911. The reversal of 2201904 is 4091022.

It is an interprime number because it is at equal distance from previous prime (2201897) and next prime (2201911).

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 9 ways as a sum of consecutive naturals, for example, 447 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (127534).

2^2201904 is an apocalyptic number.

2201904 is a gapful number since it is divisible by the number (24) 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 2201904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188350).

2201904 is an abundant number, since it is smaller than the sum of its proper divisors (4174796).

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

2201904 is a wasteful number, since it uses less digits than its factorization.

2201904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719 (or 1704 counting only the distinct ones).

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

The square root of 2201904 is about 1483.8813968778. The cubic root of 2201904 is about 130.0966539590.

Adding to 2201904 its reverse (4091022), we get a palindrome (6292926).

The spelling of 2201904 in words is "two million, two hundred one thousand, nine hundred four".