228674221 has 4 divisors (see below), whose sum is σ = 228793500. Its totient is φ = 228554944.

The previous prime is 228674219. The next prime is 228674227. The reversal of 228674221 is 122476822.

228674221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80102500 + 148571721 = 8950^2 + 12189^2 .

It is a cyclic number.

It is not a de Polignac number, because 228674221 - 2¹ = 228674219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228674227) 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, 56716 + ... + 60613.

It is an arithmetic number, because the mean of its divisors is an integer number (57198375).

Almost surely, 2^228674221 is an apocalyptic number.

It is an amenable number.

228674221 is a deficient number, since it is larger than the sum of its proper divisors (119279).

228674221 is a wasteful number, since it uses less digits than its factorization.

228674221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119278.

The product of its digits is 21504, while the sum is 34.

The square root of 228674221 is about 15121.9780782806. The cubic root of 228674221 is about 611.5130592392.

The spelling of 228674221 in words is "two hundred twenty-eight million, six hundred seventy-four thousand, two hundred twenty-one".