2216382578 has 8 divisors (see below), whose sum is σ = 3328899420. Its totient is φ = 1106749440.

The previous prime is 2216382577. The next prime is 2216382593. The reversal of 2216382578 is 8752836122.

It can be written as a sum of positive squares in 2 ways, for example, as 2203081969 + 13300609 = 46937^2 + 3647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2216382577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719003 + ... + 722078.

Almost surely, 2^2216382578 is an apocalyptic number.

2216382578 is a deficient number, since it is larger than the sum of its proper divisors (1112516842).

2216382578 is a wasteful number, since it uses less digits than its factorization.

2216382578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441852.

The product of its digits is 322560, while the sum is 44.

The square root of 2216382578 is about 47078.4725538117. The cubic root of 2216382578 is about 1303.8118059454.

The spelling of 2216382578 in words is "two billion, two hundred sixteen million, three hundred eighty-two thousand, five hundred seventy-eight".