11538140 has 24 divisors (see below), whose sum is σ = 24412752. Its totient is φ = 4580480.

The previous prime is 11538133. The next prime is 11538181. The reversal of 11538140 is 4183511.

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 7 ways as a sum of consecutive naturals, for example, 635 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (1017198).

Almost surely, 2^11538140 is an apocalyptic number.

11538140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11538140 is an abundant number, since it is smaller than the sum of its proper divisors (12874612).

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

11538140 is a wasteful number, since it uses less digits than its factorization.

11538140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357 (or 4355 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 11538140 is about 3396.7837729240. The cubic root of 11538140 is about 225.9671291635.

The spelling of 11538140 in words is "eleven million, five hundred thirty-eight thousand, one hundred forty".