228133481 has 8 divisors (see below), whose sum is σ = 238227264. Its totient is φ = 218054320.

The previous prime is 228133463. The next prime is 228133483. The reversal of 228133481 is 184331822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228133481 - 2⁶ = 228133417 is a prime.

It is a super-2 number, since 2×228133481² = 104089770306354722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228133483) 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 7 ways as a sum of consecutive naturals, for example, 38915 + ... + 44391.

It is an arithmetic number, because the mean of its divisors is an integer number (29778408).

Almost surely, 2^228133481 is an apocalyptic number.

It is an amenable number.

228133481 is a deficient number, since it is larger than the sum of its proper divisors (10093783).

228133481 is a wasteful number, since it uses less digits than its factorization.

228133481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311.

The product of its digits is 9216, while the sum is 32.

The square root of 228133481 is about 15104.0882214055. The cubic root of 228133481 is about 611.0306691166.

The spelling of 228133481 in words is "two hundred twenty-eight million, one hundred thirty-three thousand, four hundred eighty-one".