11863857 has 8 divisors (see below), whose sum is σ = 15847776. Its totient is φ = 7894592.

The previous prime is 11863843. The next prime is 11863867. The reversal of 11863857 is 75836811.

11863857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11863857 - 2⁷ = 11863729 is a prime.

It is a super-2 number, since 2×11863857² = 281502205832898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11863867) 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 7 ways as a sum of consecutive naturals, for example, 1608 + ... + 5129.

It is an arithmetic number, because the mean of its divisors is an integer number (1980972).

Almost surely, 2^11863857 is an apocalyptic number.

It is an amenable number.

11863857 is a deficient number, since it is larger than the sum of its proper divisors (3983919).

11863857 is an equidigital number, since it uses as much as digits as its factorization.

11863857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327.

The product of its digits is 40320, while the sum is 39.

The square root of 11863857 is about 3444.3950121901. The cubic root of 11863857 is about 228.0737488419.

It can be divided in two parts, 11863 and 857, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 11863857 in words is "eleven million, eight hundred sixty-three thousand, eight hundred fifty-seven".