11872987 has 12 divisors (see below), whose sum is σ = 14416720. Its totient is φ = 9576576.

The previous prime is 11872961. The next prime is 11873011. The reversal of 11872987 is 78927811.

It is a happy number.

It is not a de Polignac number, because 11872987 - 2¹¹ = 11870939 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11872187) 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, 912 + ... + 4957.

Almost surely, 2^11872987 is an apocalyptic number.

11872987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11872987 is a deficient number, since it is larger than the sum of its proper divisors (2543733).

11872987 is an equidigital number, since it uses as much as digits as its factorization.

11872987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5910 (or 5893 counting only the distinct ones).

The product of its digits is 56448, while the sum is 43.

The square root of 11872987 is about 3445.7200989053. The cubic root of 11872987 is about 228.1322396401.

The spelling of 11872987 in words is "eleven million, eight hundred seventy-two thousand, nine hundred eighty-seven".