11563378 has 4 divisors (see below), whose sum is σ = 17345070. Its totient is φ = 5781688.

The previous prime is 11563369. The next prime is 11563379. The reversal of 11563378 is 87336511.

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

It can be written as a sum of positive squares in only one way, i.e., 6953769 + 4609609 = 2637^2 + 2147^2 .

It is not an unprimeable number, because it can be changed into a prime (11563379) by changing a digit.

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 as a sum of consecutive naturals, namely, 2890843 + ... + 2890846.

Almost surely, 2^11563378 is an apocalyptic number.

11563378 is a deficient number, since it is larger than the sum of its proper divisors (5781692).

11563378 is an equidigital number, since it uses as much as digits as its factorization.

11563378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5781691.

The product of its digits is 15120, while the sum is 34.

The square root of 11563378 is about 3400.4967284207. The cubic root of 11563378 is about 226.1317659051.

Adding to 11563378 its reverse (87336511), we get a palindrome (98899889).

The spelling of 11563378 in words is "eleven million, five hundred sixty-three thousand, three hundred seventy-eight".