228005045 has 4 divisors (see below), whose sum is σ = 273606060. Its totient is φ = 182404032.

The previous prime is 228005033. The next prime is 228005119. The reversal of 228005045 is 540500822.

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 64625521 + 163379524 = 8039^2 + 12782^2 .

It is a cyclic number.

It is not a de Polignac number, because 228005045 - 2²⁴ = 211227829 is a prime.

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, 22800500 + ... + 22800509.

It is an arithmetic number, because the mean of its divisors is an integer number (68401515).

Almost surely, 2^228005045 is an apocalyptic number.

It is an amenable number.

228005045 is a deficient number, since it is larger than the sum of its proper divisors (45601015).

228005045 is an equidigital number, since it uses as much as digits as its factorization.

228005045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45601014.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 228005045 is about 15099.8359262609. The cubic root of 228005045 is about 610.9159803144.

Adding to 228005045 its reverse (540500822), we get a palindrome (768505867).

The spelling of 228005045 in words is "two hundred twenty-eight million, five thousand, forty-five".