11128404 has 48 divisors (see below), whose sum is σ = 31425408. Its totient is φ = 2992128.

The previous prime is 11128399. The next prime is 11128417. The reversal of 11128404 is 40482111.

It is a happy number.

11128404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469 + ... + 5324.

It is an arithmetic number, because the mean of its divisors is an integer number (654696).

Almost surely, 2^11128404 is an apocalyptic number.

11128404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11128404 is an abundant number, since it is smaller than the sum of its proper divisors (20297004).

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

11128404 is a wasteful number, since it uses less digits than its factorization.

11128404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824 (or 7822 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 11128404 is about 3335.9262581778. The cubic root of 11128404 is about 223.2600209852.

The spelling of 11128404 in words is "eleven million, one hundred twenty-eight thousand, four hundred four".