11216978 has 16 divisors (see below), whose sum is σ = 17466624. Its totient is φ = 5396880.

The previous prime is 11216977. The next prime is 11216993. The reversal of 11216978 is 87961211.

It is not an unprimeable number, because it can be changed into a prime (11216977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13676 + ... + 14472.

It is an arithmetic number, because the mean of its divisors is an integer number (1091664).

Almost surely, 2^11216978 is an apocalyptic number.

11216978 is a deficient number, since it is larger than the sum of its proper divisors (6249646).

11216978 is a wasteful number, since it uses less digits than its factorization.

11216978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its digits is 6048, while the sum is 35.

The square root of 11216978 is about 3349.1757194868. The cubic root of 11216978 is about 223.8507855101.

The spelling of 11216978 in words is "eleven million, two hundred sixteen thousand, nine hundred seventy-eight".