13812087 has 8 divisors (see below), whose sum is σ = 18434304. Its totient is φ = 9198968.

The previous prime is 13812083. The next prime is 13812089. The reversal of 13812087 is 78021831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13812087 - 2² = 13812083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058 + ... + 6080.

It is an arithmetic number, because the mean of its divisors is an integer number (2304288).

Almost surely, 2^13812087 is an apocalyptic number.

13812087 is a deficient number, since it is larger than the sum of its proper divisors (4622217).

13812087 is a wasteful number, since it uses less digits than its factorization.

13812087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 13812087 is about 3716.4616236415. The cubic root of 13812087 is about 239.9310392147.

The spelling of 13812087 in words is "thirteen million, eight hundred twelve thousand, eighty-seven".