2216328257 has 8 divisors (see below), whose sum is σ = 2603798400. Its totient is φ = 1859855760.

The previous prime is 2216328241. The next prime is 2216328263. The reversal of 2216328257 is 7528236122.

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

It is a cyclic number.

It is not a de Polignac number, because 2216328257 - 2⁴ = 2216328241 is a prime.

It is a super-2 number, since 2×2216328257² = 9824221885553316098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2216328257.

It is not an unprimeable number, because it can be changed into a prime (2216325257) 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, 7749257 + ... + 7749542.

It is an arithmetic number, because the mean of its divisors is an integer number (325474800).

Almost surely, 2^2216328257 is an apocalyptic number.

It is an amenable number.

2216328257 is a deficient number, since it is larger than the sum of its proper divisors (387470143).

2216328257 is a wasteful number, since it uses less digits than its factorization.

2216328257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15498823.

The product of its digits is 80640, while the sum is 38.

The square root of 2216328257 is about 47077.8956305398. The cubic root of 2216328257 is about 1303.8011542134.

The spelling of 2216328257 in words is "two billion, two hundred sixteen million, three hundred twenty-eight thousand, two hundred fifty-seven".