11381128 has 32 divisors (see below), whose sum is σ = 23412960. Its totient is φ = 5143680.

The previous prime is 11381119. The next prime is 11381147. The reversal of 11381128 is 82118311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24676 + ... + 25132.

It is an arithmetic number, because the mean of its divisors is an integer number (731655).

Almost surely, 2^11381128 is an apocalyptic number.

It is an amenable number.

11381128 is an abundant number, since it is smaller than the sum of its proper divisors (12031832).

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

11381128 is a wasteful number, since it uses less digits than its factorization.

11381128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 753 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 11381128 is about 3373.5927436488. The cubic root of 11381128 is about 224.9374509260.

Adding to 11381128 its reverse (82118311), we get a palindrome (93499439).

The spelling of 11381128 in words is "eleven million, three hundred eighty-one thousand, one hundred twenty-eight".