11538487 has 8 divisors (see below), whose sum is σ = 11918016. Its totient is φ = 11162592.

The previous prime is 11538481. The next prime is 11538493. The reversal of 11538487 is 78483511.

It is an interprime number because it is at equal distance from previous prime (11538481) and next prime (11538493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11538487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11538481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6498 + ... + 8080.

It is an arithmetic number, because the mean of its divisors is an integer number (1489752).

Almost surely, 2^11538487 is an apocalyptic number.

11538487 is a deficient number, since it is larger than the sum of its proper divisors (379529).

11538487 is a wasteful number, since it uses less digits than its factorization.

11538487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its digits is 26880, while the sum is 37.

The square root of 11538487 is about 3396.8348502687. The cubic root of 11538487 is about 225.9693943988.

The spelling of 11538487 in words is "eleven million, five hundred thirty-eight thousand, four hundred eighty-seven".