228866571 has 48 divisors (see below), whose sum is σ = 363860640. Its totient is φ = 138101760.

The previous prime is 228866527. The next prime is 228866581. The reversal of 228866571 is 175668822.

It is a de Polignac number, because none of the positive numbers 2^k-228866571 is a prime.

It is a super-3 number, since 3×228866571³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (228866501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 385651 + ... + 386243.

It is an arithmetic number, because the mean of its divisors is an integer number (7580430).

Almost surely, 2^228866571 is an apocalyptic number.

228866571 is a deficient number, since it is larger than the sum of its proper divisors (134994069).

228866571 is a wasteful number, since it uses less digits than its factorization.

228866571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 713 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 228866571 is about 15128.3366898017. The cubic root of 228866571 is about 611.6844698626.

The spelling of 228866571 in words is "two hundred twenty-eight million, eight hundred sixty-six thousand, five hundred seventy-one".