228704306 has 4 divisors (see below), whose sum is σ = 343056462. Its totient is φ = 114352152.

The previous prime is 228704297. The next prime is 228704309. The reversal of 228704306 is 603407822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 603407822 = 2 ⋅301703911.

It can be written as a sum of positive squares in only one way, i.e., 228463225 + 241081 = 15115^2 + 491^2 .

It is not an unprimeable number, because it can be changed into a prime (228704309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57176075 + ... + 57176078.

Almost surely, 2^228704306 is an apocalyptic number.

228704306 is a deficient number, since it is larger than the sum of its proper divisors (114352156).

228704306 is a wasteful number, since it uses less digits than its factorization.

228704306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114352155.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 228704306 is about 15122.9727897659. The cubic root of 228704306 is about 611.5398755015.

The spelling of 228704306 in words is "two hundred twenty-eight million, seven hundred four thousand, three hundred six".