228569811 has 24 divisors (see below), whose sum is σ = 331324224. Its totient is φ = 140058240.

The previous prime is 228569771. The next prime is 228569827. The reversal of 228569811 is 118965822.

It is a happy number.

It is not a de Polignac number, because 228569811 - 2¹⁴ = 228553427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228569311) 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, 34216 + ... + 40346.

It is an arithmetic number, because the mean of its divisors is an integer number (13805176).

Almost surely, 2^228569811 is an apocalyptic number.

228569811 is a deficient number, since it is larger than the sum of its proper divisors (102754413).

228569811 is a wasteful number, since it uses less digits than its factorization.

228569811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211 (or 6194 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 228569811 is about 15118.5254241278. The cubic root of 228569811 is about 611.4199751447.

The spelling of 228569811 in words is "two hundred twenty-eight million, five hundred sixty-nine thousand, eight hundred eleven".