2203128 has 48 divisors (see below), whose sum is σ = 6135480. Its totient is φ = 713664.

The previous prime is 2203121. The next prime is 2203133. The reversal of 2203128 is 8213022.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2203128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2251 + ... + 3077.

2^2203128 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 2203128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3067740).

2203128 is an abundant number, since it is smaller than the sum of its proper divisors (3932352).

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

2203128 is a wasteful number, since it uses less digits than its factorization.

2203128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2203128 is about 1484.2937714617. The cubic root of 2203128 is about 130.1207556467.

The spelling of 2203128 in words is "two million, two hundred three thousand, one hundred twenty-eight".