12087806 has 4 divisors (see below), whose sum is σ = 18131712. Its totient is φ = 6043902.

The previous prime is 12087793. The next prime is 12087839. The reversal of 12087806 is 60878021.

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

It is a super-2 number, since 2×12087806² = 292230107787272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3021950 + ... + 3021953.

It is an arithmetic number, because the mean of its divisors is an integer number (4532928).

Almost surely, 2^12087806 is an apocalyptic number.

12087806 is a deficient number, since it is larger than the sum of its proper divisors (6043906).

12087806 is an equidigital number, since it uses as much as digits as its factorization.

12087806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043905.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 12087806 is about 3476.7522201043. The cubic root of 12087806 is about 229.4998963678.

The spelling of 12087806 in words is "twelve million, eighty-seven thousand, eight hundred six".