228421227 has 4 divisors (see below), whose sum is σ = 304561640. Its totient is φ = 152280816.

The previous prime is 228421223. The next prime is 228421261. The reversal of 228421227 is 722124822.

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

It is not a de Polignac number, because 228421227 - 2² = 228421223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228421194 and 228421203.

It is not an unprimeable number, because it can be changed into a prime (228421223) 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, 38070202 + ... + 38070207.

It is an arithmetic number, because the mean of its divisors is an integer number (76140410).

Almost surely, 2^228421227 is an apocalyptic number.

228421227 is a deficient number, since it is larger than the sum of its proper divisors (76140413).

228421227 is an equidigital number, since it uses as much as digits as its factorization.

228421227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76140412.

The product of its digits is 7168, while the sum is 30.

The square root of 228421227 is about 15113.6106539768. The cubic root of 228421227 is about 611.2874599514.

The spelling of 228421227 in words is "two hundred twenty-eight million, four hundred twenty-one thousand, two hundred twenty-seven".