11125638 has 24 divisors (see below), whose sum is σ = 24438648. Its totient is φ = 3657312.

The previous prime is 11125627. The next prime is 11125643. The reversal of 11125638 is 83652111.

11125638 is a `hidden beast` number, since 1 + 1 + 1 + 25 + 638 = 666.

It is a Curzon number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2920 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (1018277).

Almost surely, 2^11125638 is an apocalyptic number.

11125638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11125638 is an abundant number, since it is smaller than the sum of its proper divisors (13313010).

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

11125638 is a wasteful number, since it uses less digits than its factorization.

11125638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8548 (or 8545 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 11125638 is about 3335.5116549039. The cubic root of 11125638 is about 223.2415221244.

Adding to 11125638 its reverse (83652111), we get a palindrome (94777749).

The spelling of 11125638 in words is "eleven million, one hundred twenty-five thousand, six hundred thirty-eight".