12087857 has 16 divisors (see below), whose sum is σ = 13440000. Its totient is φ = 10820304.

The previous prime is 12087847. The next prime is 12087877. The reversal of 12087857 is 75878021.

12087857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12087857 - 2⁶ = 12087793 is a prime.

It is a super-2 number, since 2×12087857² = 292232573704898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12087857.

It is not an unprimeable number, because it can be changed into a prime (12087847) 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 15 ways as a sum of consecutive naturals, for example, 60644 + ... + 60842.

It is an arithmetic number, because the mean of its divisors is an integer number (840000).

Almost surely, 2^12087857 is an apocalyptic number.

It is an amenable number.

12087857 is a deficient number, since it is larger than the sum of its proper divisors (1352143).

12087857 is a wasteful number, since it uses less digits than its factorization.

12087857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 12087857 is about 3476.7595545278. The cubic root of 12087857 is about 229.5002191305.

The spelling of 12087857 in words is "twelve million, eighty-seven thousand, eight hundred fifty-seven".