11089428 has 48 divisors (see below), whose sum is σ = 29898624. Its totient is φ = 3133440.

The previous prime is 11089409. The next prime is 11089433. The reversal of 11089428 is 82498011.

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, 7468 + ... + 8828.

It is an arithmetic number, because the mean of its divisors is an integer number (622888).

Almost surely, 2^11089428 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 11089428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14949312).

11089428 is an abundant number, since it is smaller than the sum of its proper divisors (18809196).

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

11089428 is a wasteful number, since it uses less digits than its factorization.

11089428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 11089428 is about 3330.0792783356. The cubic root of 11089428 is about 222.9990682795. Note that the first 3 decimals are identical.

The spelling of 11089428 in words is "eleven million, eighty-nine thousand, four hundred twenty-eight".