228044945 has 4 divisors (see below), whose sum is σ = 273653940. Its totient is φ = 182435952.

The previous prime is 228044941. The next prime is 228045001. The reversal of 228044945 is 549440822.

It is a happy number.

228044945 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 31820881 + 196224064 = 5641^2 + 14008^2 .

It is a cyclic number.

It is not a de Polignac number, because 228044945 - 2² = 228044941 is a prime.

It is a super-3 number, since 3×228044945³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228044899 and 228044908.

It is not an unprimeable number, because it can be changed into a prime (228044941) 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, 22804490 + ... + 22804499.

It is an arithmetic number, because the mean of its divisors is an integer number (68413485).

Almost surely, 2^228044945 is an apocalyptic number.

It is an amenable number.

228044945 is a deficient number, since it is larger than the sum of its proper divisors (45608995).

228044945 is an equidigital number, since it uses as much as digits as its factorization.

228044945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45608994.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 228044945 is about 15101.1570748734. The cubic root of 228044945 is about 610.9516142129.

The spelling of 228044945 in words is "two hundred twenty-eight million, forty-four thousand, nine hundred forty-five".