12087878 has 8 divisors (see below), whose sum is σ = 19780200. Its totient is φ = 5494480.

The previous prime is 12087877. The next prime is 12087899. The reversal of 12087878 is 87878021.

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

It is a super-2 number, since 2×12087878² = 292233589085768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274703 + ... + 274746.

It is an arithmetic number, because the mean of its divisors is an integer number (2472525).

Almost surely, 2^12087878 is an apocalyptic number.

12087878 is a deficient number, since it is larger than the sum of its proper divisors (7692322).

12087878 is a wasteful number, since it uses less digits than its factorization.

12087878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549462.

The product of its (nonzero) digits is 50176, while the sum is 41.

The square root of 12087878 is about 3476.7625745800. The cubic root of 12087878 is about 229.5003520325.

The spelling of 12087878 in words is "twelve million, eighty-seven thousand, eight hundred seventy-eight".