11123508 has 48 divisors (see below), whose sum is σ = 29985984. Its totient is φ = 3171840.

The previous prime is 11123507. The next prime is 11123509. The reversal of 11123508 is 80532111.

It is an interprime number because it is at equal distance from previous prime (11123507) and next prime (11123509).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123507) 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 15 ways as a sum of consecutive naturals, for example, 235 + ... + 4722.

It is an arithmetic number, because the mean of its divisors is an integer number (624708).

Almost surely, 2^11123508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14992992).

11123508 is an abundant number, since it is smaller than the sum of its proper divisors (18862476).

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

11123508 is a wasteful number, since it uses less digits than its factorization.

11123508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992 (or 4990 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 11123508 is about 3335.1923482762. The cubic root of 11123508 is about 223.2272747081.

Adding to 11123508 its reverse (80532111), we get a palindrome (91655619).

The spelling of 11123508 in words is "eleven million, one hundred twenty-three thousand, five hundred eight".