228446133 has 4 divisors (see below), whose sum is σ = 304594848. Its totient is φ = 152297420.

The previous prime is 228446131. The next prime is 228446149. The reversal of 228446133 is 331644822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228446133 - 2¹ = 228446131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228446094 and 228446103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228446131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38074353 + ... + 38074358.

It is an arithmetic number, because the mean of its divisors is an integer number (76148712).

Almost surely, 2^228446133 is an apocalyptic number.

It is an amenable number.

228446133 is a deficient number, since it is larger than the sum of its proper divisors (76148715).

228446133 is an equidigital number, since it uses as much as digits as its factorization.

228446133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76148714.

The product of its digits is 27648, while the sum is 33.

The square root of 228446133 is about 15114.4345908142. The cubic root of 228446133 is about 611.3096764683.

The spelling of 228446133 in words is "two hundred twenty-eight million, four hundred forty-six thousand, one hundred thirty-three".