11889878 has 32 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 4275360.

The previous prime is 11889869. The next prime is 11889893. The reversal of 11889878 is 87898811.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 968 + ... + 4971.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^11889878 is an apocalyptic number.

11889878 is an abundant number, since it is smaller than the sum of its proper divisors (12060202).

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

11889878 is a wasteful number, since it uses less digits than its factorization.

11889878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972.

The product of its digits is 258048, while the sum is 50.

The square root of 11889878 is about 3448.1702394168. The cubic root of 11889878 is about 228.2403718166.

The spelling of 11889878 in words is "eleven million, eight hundred eighty-nine thousand, eight hundred seventy-eight".