11116778 has 4 divisors (see below), whose sum is σ = 16675170. Its totient is φ = 5558388.

The previous prime is 11116757. The next prime is 11116789. The reversal of 11116778 is 87761111.

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., 9778129 + 1338649 = 3127^2 + 1157^2 .

It is a plaindrome in base 10.

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 as a sum of consecutive naturals, namely, 2779193 + ... + 2779196.

Almost surely, 2^11116778 is an apocalyptic number.

11116778 is a deficient number, since it is larger than the sum of its proper divisors (5558392).

11116778 is an equidigital number, since it uses as much as digits as its factorization.

11116778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558391.

The product of its digits is 2352, while the sum is 32.

The square root of 11116778 is about 3334.1832583108. The cubic root of 11116778 is about 223.1822462680.

Adding to 11116778 its reverse (87761111), we get a palindrome (98877889).

The spelling of 11116778 in words is "eleven million, one hundred sixteen thousand, seven hundred seventy-eight".