2116578 has 16 divisors (see below), whose sum is σ = 4303296. Its totient is φ = 693840.

The previous prime is 2116577. The next prime is 2116579. The reversal of 2116578 is 8756112.

It is an interprime number because it is at equal distance from previous prime (2116577) and next prime (2116579).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116571) 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, 2526 + ... + 3257.

It is an arithmetic number, because the mean of its divisors is an integer number (268956).

2^2116578 is an apocalyptic number.

2116578 is an abundant number, since it is smaller than the sum of its proper divisors (2186718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2116578 is a wasteful number, since it uses less digits than its factorization.

2116578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849.

The product of its digits is 3360, while the sum is 30.

The square root of 2116578 is about 1454.8463836433. The cubic root of 2116578 is about 128.3940089013.

The spelling of 2116578 in words is "two million, one hundred sixteen thousand, five hundred seventy-eight".