228446089921 has 8 divisors (see below), whose sum is σ = 262433999744. Its totient is φ = 194796368640.

The previous prime is 228446089889. The next prime is 228446089987. The reversal of 228446089921 is 129980644822.

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 228446089921 - 2⁵ = 228446089889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228446089321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84545685 + ... + 84548386.

It is an arithmetic number, because the mean of its divisors is an integer number (32804249968).

Almost surely, 2^228446089921 is an apocalyptic number.

It is an amenable number.

228446089921 is a deficient number, since it is larger than the sum of its proper divisors (33987909823).

228446089921 is a wasteful number, since it uses less digits than its factorization.

228446089921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169094271.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 228446089921 in words is "two hundred twenty-eight billion, four hundred forty-six million, eighty-nine thousand, nine hundred twenty-one".