11719287 has 12 divisors (see below), whose sum is σ = 16978104. Its totient is φ = 7789680.

The previous prime is 11719243. The next prime is 11719289. The reversal of 11719287 is 78291711.

It is not a de Polignac number, because 11719287 - 2⁶ = 11719223 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11719289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1612 + ... + 5102.

It is an arithmetic number, because the mean of its divisors is an integer number (1414842).

Almost surely, 2^11719287 is an apocalyptic number.

11719287 is a deficient number, since it is larger than the sum of its proper divisors (5258817).

11719287 is a wasteful number, since it uses less digits than its factorization.

11719287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870 (or 3867 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 11719287 is about 3423.3444173790. The cubic root of 11719287 is about 227.1435435399.

The spelling of 11719287 in words is "eleven million, seven hundred nineteen thousand, two hundred eighty-seven".