11228642 has 4 divisors (see below), whose sum is σ = 16842966. Its totient is φ = 5614320.

The previous prime is 11228627. The next prime is 11228663. The reversal of 11228642 is 24682211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 4669921 = 2561^2 + 2161^2 .

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, 2807159 + ... + 2807162.

Almost surely, 2^11228642 is an apocalyptic number.

11228642 is a deficient number, since it is larger than the sum of its proper divisors (5614324).

11228642 is an equidigital number, since it uses as much as digits as its factorization.

11228642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614323.

The product of its digits is 1536, while the sum is 26.

The square root of 11228642 is about 3350.9165910240. The cubic root of 11228642 is about 223.9283492136.

The spelling of 11228642 in words is "eleven million, two hundred twenty-eight thousand, six hundred forty-two".