228220563 has 24 divisors (see below), whose sum is σ = 326686608. Its totient is φ = 141216768.

The previous prime is 228220561. The next prime is 228220583. The reversal of 228220563 is 365022822.

It is not a de Polignac number, because 228220563 - 2¹ = 228220561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228220563.

It is not an unprimeable number, because it can be changed into a prime (228220561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1146738 + ... + 1146936.

It is an arithmetic number, because the mean of its divisors is an integer number (13611942).

Almost surely, 2^228220563 is an apocalyptic number.

228220563 is a deficient number, since it is larger than the sum of its proper divisors (98466045).

228220563 is a wasteful number, since it uses less digits than its factorization.

228220563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 228220563 is about 15106.9706758172. The cubic root of 228220563 is about 611.1084057756.

The spelling of 228220563 in words is "two hundred twenty-eight million, two hundred twenty thousand, five hundred sixty-three".