11982287 has 4 divisors (see below), whose sum is σ = 12503280. Its totient is φ = 11461296.

The previous prime is 11982277. The next prime is 11982301. The reversal of 11982287 is 78228911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11982287 - 2¹⁴ = 11965903 is a prime.

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 11982287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11982247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260462 + ... + 260507.

It is an arithmetic number, because the mean of its divisors is an integer number (3125820).

Almost surely, 2^11982287 is an apocalyptic number.

11982287 is a deficient number, since it is larger than the sum of its proper divisors (520993).

11982287 is an equidigital number, since it uses as much as digits as its factorization.

11982287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520992.

The product of its digits is 16128, while the sum is 38.

The square root of 11982287 is about 3461.5440196537. The cubic root of 11982287 is about 228.8301467991.

The spelling of 11982287 in words is "eleven million, nine hundred eighty-two thousand, two hundred eighty-seven".