11877478 has 4 divisors (see below), whose sum is σ = 17816220. Its totient is φ = 5938738.

The previous prime is 11877473. The next prime is 11877479. The reversal of 11877478 is 87477811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11877473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2969368 + ... + 2969371.

It is an arithmetic number, because the mean of its divisors is an integer number (4454055).

Almost surely, 2^11877478 is an apocalyptic number.

11877478 is a deficient number, since it is larger than the sum of its proper divisors (5938742).

11877478 is an equidigital number, since it uses as much as digits as its factorization.

11877478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938741.

The product of its digits is 87808, while the sum is 43.

The square root of 11877478 is about 3446.3717152971. The cubic root of 11877478 is about 228.1609999607.

The spelling of 11877478 in words is "eleven million, eight hundred seventy-seven thousand, four hundred seventy-eight".