11487871 has 8 divisors (see below), whose sum is σ = 11967264. Its totient is φ = 11017440.

The previous prime is 11487863. The next prime is 11487877. The reversal of 11487871 is 17878411.

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

It is a cyclic number.

It is not a de Polignac number, because 11487871 - 2³ = 11487863 is a prime.

It is a super-2 number, since 2×11487871² = 263942360225282, which contains 22 as substring.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11487871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11487877) 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, 441 + ... + 4813.

It is an arithmetic number, because the mean of its divisors is an integer number (1495908).

Almost surely, 2^11487871 is an apocalyptic number.

11487871 is a deficient number, since it is larger than the sum of its proper divisors (479393).

11487871 is an equidigital number, since it uses as much as digits as its factorization.

11487871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481.

The product of its digits is 12544, while the sum is 37.

The square root of 11487871 is about 3389.3761962934. The cubic root of 11487871 is about 225.6384893064.

The spelling of 11487871 in words is "eleven million, four hundred eighty-seven thousand, eight hundred seventy-one".