11977378 has 8 divisors (see below), whose sum is σ = 20532672. Its totient is φ = 5133156.

The previous prime is 11977369. The next prime is 11977397. The reversal of 11977378 is 87377911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 427750 + ... + 427777.

It is an arithmetic number, because the mean of its divisors is an integer number (2566584).

Almost surely, 2^11977378 is an apocalyptic number.

11977378 is a deficient number, since it is larger than the sum of its proper divisors (8555294).

11977378 is an equidigital number, since it uses as much as digits as its factorization.

11977378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855536.

The product of its digits is 74088, while the sum is 43.

The square root of 11977378 is about 3460.8348703745. The cubic root of 11977378 is about 228.7988928704.

The spelling of 11977378 in words is "eleven million, nine hundred seventy-seven thousand, three hundred seventy-eight".