11887471 has 8 divisors (see below), whose sum is σ = 12927600. Its totient is φ = 10885248.

The previous prime is 11887457. The next prime is 11887489. The reversal of 11887471 is 17478811.

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 11887471 - 2⁵ = 11887439 is a prime.

It is a super-3 number, since 3×11887471³ (a number of 22 digits) contains 333 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 11887471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887441) 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, 8821 + ... + 10078.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^11887471 is an apocalyptic number.

11887471 is a deficient number, since it is larger than the sum of its proper divisors (1040129).

11887471 is a wasteful number, since it uses less digits than its factorization.

11887471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18953.

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

The square root of 11887471 is about 3447.8211960599. The cubic root of 11887471 is about 228.2249690331.

The spelling of 11887471 in words is "eleven million, eight hundred eighty-seven thousand, four hundred seventy-one".