11228788 has 6 divisors (see below), whose sum is σ = 19650386. Its totient is φ = 5614392.

The previous prime is 11228779. The next prime is 11228831. The reversal of 11228788 is 88782211.

It can be written as a sum of positive squares in only one way, i.e., 6441444 + 4787344 = 2538^2 + 2188^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1403595 + ... + 1403602.

Almost surely, 2^11228788 is an apocalyptic number.

It is an amenable number.

11228788 is a deficient number, since it is larger than the sum of its proper divisors (8421598).

11228788 is a wasteful number, since it uses less digits than its factorization.

11228788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807201 (or 2807199 counting only the distinct ones).

The product of its digits is 14336, while the sum is 37.

The square root of 11228788 is about 3350.9383760374. The cubic root of 11228788 is about 223.9293197494.

It can be divided in two parts, 112 and 28788, that added together give a square (28900 = 170²).

The spelling of 11228788 in words is "eleven million, two hundred twenty-eight thousand, seven hundred eighty-eight".