11871858 has 16 divisors (see below), whose sum is σ = 23839200. Its totient is φ = 3941376.

The previous prime is 11871829. The next prime is 11871907. The reversal of 11871858 is 85817811.

11871858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2308 + ... + 5391.

It is an arithmetic number, because the mean of its divisors is an integer number (1489950).

Almost surely, 2^11871858 is an apocalyptic number.

11871858 is an abundant number, since it is smaller than the sum of its proper divisors (11967342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11871858 is a wasteful number, since it uses less digits than its factorization.

11871858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961.

The product of its digits is 17920, while the sum is 39.

The square root of 11871858 is about 3445.5562685871. The cubic root of 11871858 is about 228.1250083943.

The spelling of 11871858 in words is "eleven million, eight hundred seventy-one thousand, eight hundred fifty-eight".