228564005 has 4 divisors (see below), whose sum is σ = 274276812. Its totient is φ = 182851200.

The previous prime is 228563999. The next prime is 228564043. The reversal of 228564005 is 500465822.

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 36990724 + 191573281 = 6082^2 + 13841^2 .

It is not a de Polignac number, because 228564005 - 2⁶ = 228563941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22856396 + ... + 22856405.

It is an arithmetic number, because the mean of its divisors is an integer number (68569203).

Almost surely, 2^228564005 is an apocalyptic number.

It is an amenable number.

228564005 is a deficient number, since it is larger than the sum of its proper divisors (45712807).

228564005 is an equidigital number, since it uses as much as digits as its factorization.

228564005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45712806.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 228564005 is about 15118.3334068276. Note that the first 3 decimals coincide. The cubic root of 228564005 is about 611.4147981204.

The spelling of 228564005 in words is "two hundred twenty-eight million, five hundred sixty-four thousand, five".