2228353217 has 10 divisors (see below), whose sum is σ = 2381691618. Its totient is φ = 2077672928.

The previous prime is 2228353213. The next prime is 2228353223. The reversal of 2228353217 is 7123538222.

It can be written as a sum of positive squares in only one way, i.e., 2097273616 + 131079601 = 45796^2 + 11449^2 .

It is not a de Polignac number, because 2228353217 - 2² = 2228353213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2228353213) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20825678 + ... + 20825784.

Almost surely, 2^2228353217 is an apocalyptic number.

It is an amenable number.

2228353217 is a deficient number, since it is larger than the sum of its proper divisors (153338401).

2228353217 is an frugal number, since it uses more digits than its factorization.

2228353217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 124 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 2228353217 is about 47205.4363076966. The cubic root of 2228353217 is about 1306.1548800588.

The spelling of 2228353217 in words is "two billion, two hundred twenty-eight million, three hundred fifty-three thousand, two hundred seventeen".