11516978 has 16 divisors (see below), whose sum is σ = 18912096. Its totient is φ = 5216640.

The previous prime is 11516933. The next prime is 11517017. The reversal of 11516978 is 87961511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7025 + ... + 8507.

It is an arithmetic number, because the mean of its divisors is an integer number (1182006).

Almost surely, 2^11516978 is an apocalyptic number.

11516978 is a deficient number, since it is larger than the sum of its proper divisors (7395118).

11516978 is a wasteful number, since it uses less digits than its factorization.

11516978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 15120, while the sum is 38.

The square root of 11516978 is about 3393.6673378515. The cubic root of 11516978 is about 225.8288965177.

The spelling of 11516978 in words is "eleven million, five hundred sixteen thousand, nine hundred seventy-eight".