11878 has 4 divisors (see below), whose sum is σ = 17820. Its totient is φ = 5938.
The previous prime is 11867. The next prime is 11887. The reversal of 11878 is 87811.
11878 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
It is a plaindrome in base 15.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2968 + ... + 2971.
It is an arithmetic number, because the mean of its divisors is an integer number (4455).
211878 is an apocalyptic number.
11878 is a deficient number, since it is larger than the sum of its proper divisors (5942).
11878 is an equidigital number, since it uses as much as digits as its factorization.
11878 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5941.
The product of its digits is 448, while the sum is 25.
The square root of 11878 is about 108.9862376633. The cubic root of 11878 is about 22.8164342373.
It can be divided in two parts, 118 and 78, that added together give a square (196 = 142).
The spelling of 11878 in words is "eleven thousand, eight hundred seventy-eight".
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