11438028 has 36 divisors (see below), whose sum is σ = 33043920. Its totient is φ = 3267936.

The previous prime is 11438027. The next prime is 11438051. The reversal of 11438028 is 82083411.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 11437992 and 11438010.

It is not an unprimeable number, because it can be changed into a prime (11438027) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 22443 + ... + 22946.

Almost surely, 2^11438028 is an apocalyptic number.

11438028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11438028 is an abundant number, since it is smaller than the sum of its proper divisors (21605892).

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

11438028 is a wasteful number, since it uses less digits than its factorization.

11438028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45406 (or 45401 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 11438028 is about 3382.0153754825. The cubic root of 11438028 is about 225.3116865480.

The spelling of 11438028 in words is "eleven million, four hundred thirty-eight thousand, twenty-eight".