228145044 has 12 divisors (see below), whose sum is σ = 532338464. Its totient is φ = 76048344.

The previous prime is 228145031. The next prime is 228145051. The reversal of 228145044 is 440541822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×228145044² = 104100322203523872, which contains 22 as substring.

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, 9506032 + ... + 9506055.

Almost surely, 2^228145044 is an apocalyptic number.

It is an amenable number.

228145044 is an abundant number, since it is smaller than the sum of its proper divisors (304193420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228145044 is a wasteful number, since it uses less digits than its factorization.

228145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19012094 (or 19012092 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 228145044 is about 15104.4709937157. The cubic root of 228145044 is about 611.0409923540.

Adding to 228145044 its reverse (440541822), we get a palindrome (668686866).

The spelling of 228145044 in words is "two hundred twenty-eight million, one hundred forty-five thousand, forty-four".