11812867 has 12 divisors (see below), whose sum is σ = 13071240. Its totient is φ = 10667360.

The previous prime is 11812849. The next prime is 11812873. The reversal of 11812867 is 76821811.

It is not a de Polignac number, because 11812867 - 2¹⁹ = 11288579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11812877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27984 + ... + 28402.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^11812867 is an apocalyptic number.

11812867 is a deficient number, since it is larger than the sum of its proper divisors (1258373).

11812867 is a wasteful number, since it uses less digits than its factorization.

11812867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 663 counting only the distinct ones).

The product of its digits is 5376, while the sum is 34.

The square root of 11812867 is about 3436.9851614460. The cubic root of 11812867 is about 227.7465314443.

The spelling of 11812867 in words is "eleven million, eight hundred twelve thousand, eight hundred sixty-seven".