228773133 has 32 divisors (see below), whose sum is σ = 344736000. Its totient is φ = 149925888.

The previous prime is 228773113. The next prime is 228773137. The reversal of 228773133 is 331377822.

228773133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228773133 - 2¹³ = 228764941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228773137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509293 + ... + 509741.

It is an arithmetic number, because the mean of its divisors is an integer number (10773000).

Almost surely, 2^228773133 is an apocalyptic number.

It is an amenable number.

228773133 is a deficient number, since it is larger than the sum of its proper divisors (115962867).

228773133 is a wasteful number, since it uses less digits than its factorization.

228773133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 732 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 228773133 is about 15125.2481963107. The cubic root of 228773133 is about 611.6012155992.

The spelling of 228773133 in words is "two hundred twenty-eight million, seven hundred seventy-three thousand, one hundred thirty-three".