228577333 has 4 divisors (see below), whose sum is σ = 236459340. Its totient is φ = 220695328.

The previous prime is 228577331. The next prime is 228577343. The reversal of 228577333 is 333775822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117548964 + 111028369 = 10842^2 + 10537^2 .

It is a cyclic number.

It is not a de Polignac number, because 228577333 - 2¹ = 228577331 is a prime.

It is a super-2 number, since 2×228577333² = 104495194322785778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228577331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3940960 + ... + 3941017.

It is an arithmetic number, because the mean of its divisors is an integer number (59114835).

Almost surely, 2^228577333 is an apocalyptic number.

It is an amenable number.

228577333 is a deficient number, since it is larger than the sum of its proper divisors (7882007).

228577333 is an equidigital number, since it uses as much as digits as its factorization.

228577333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882006.

The product of its digits is 211680, while the sum is 40.

The square root of 228577333 is about 15118.7741897285. The cubic root of 228577333 is about 611.4266821410.

The spelling of 228577333 in words is "two hundred twenty-eight million, five hundred seventy-seven thousand, three hundred thirty-three".