11812378 has 4 divisors (see below), whose sum is σ = 17718570. Its totient is φ = 5906188.

The previous prime is 11812343. The next prime is 11812379. The reversal of 11812378 is 87321811.

It is a happy number.

11812378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87321811 = 433 ⋅201667.

It can be written as a sum of positive squares in only one way, i.e., 10778089 + 1034289 = 3283^2 + 1017^2 .

It is not an unprimeable number, because it can be changed into a prime (11812379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2953093 + ... + 2953096.

Almost surely, 2^11812378 is an apocalyptic number.

11812378 is a deficient number, since it is larger than the sum of its proper divisors (5906192).

11812378 is an equidigital number, since it uses as much as digits as its factorization.

11812378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906191.

The product of its digits is 2688, while the sum is 31.

The square root of 11812378 is about 3436.9140227826. The cubic root of 11812378 is about 227.7433888375.

The spelling of 11812378 in words is "eleven million, eight hundred twelve thousand, three hundred seventy-eight".