11987916 has 24 divisors (see below), whose sum is σ = 28176960. Its totient is φ = 3966672.

The previous prime is 11987909. The next prime is 11987923. The reversal of 11987916 is 61978911.

It is an interprime number because it is at equal distance from previous prime (11987909) and next prime (11987923).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (1174040).

Almost surely, 2^11987916 is an apocalyptic number.

It is an amenable number.

11987916 is an abundant number, since it is smaller than the sum of its proper divisors (16189044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11987916 is a wasteful number, since it uses less digits than its factorization.

11987916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333 (or 7331 counting only the distinct ones).

The product of its digits is 27216, while the sum is 42.

The square root of 11987916 is about 3462.3570006572. The cubic root of 11987916 is about 228.8659742179.

The spelling of 11987916 in words is "eleven million, nine hundred eighty-seven thousand, nine hundred sixteen".