11289028 has 12 divisors (see below), whose sum is σ = 19797372. Its totient is φ = 5632640.

The previous prime is 11289017. The next prime is 11289029. The reversal of 11289028 is 82098211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1937664 + 9351364 = 1392^2 + 3058^2 .

It is not an unprimeable number, because it can be changed into a prime (11289029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625 + ... + 4792.

It is an arithmetic number, because the mean of its divisors is an integer number (1649781).

Almost surely, 2^11289028 is an apocalyptic number.

It is an amenable number.

11289028 is a deficient number, since it is larger than the sum of its proper divisors (8508344).

11289028 is a wasteful number, since it uses less digits than its factorization.

11289028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942 (or 5940 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 11289028 is about 3359.9148798742. The cubic root of 11289028 is about 224.3290497742.

The spelling of 11289028 in words is "eleven million, two hundred eighty-nine thousand, twenty-eight".