228165445 has 8 divisors (see below), whose sum is σ = 274093344. Its totient is φ = 182335824.

The previous prime is 228165407. The next prime is 228165463. The reversal of 228165445 is 544561822.

228165445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228165445 - 2⁷ = 228165317 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 7 ways as a sum of consecutive naturals, for example, 19359 + ... + 28828.

It is an arithmetic number, because the mean of its divisors is an integer number (34261668).

Almost surely, 2^228165445 is an apocalyptic number.

It is an amenable number.

228165445 is a deficient number, since it is larger than the sum of its proper divisors (45927899).

228165445 is an equidigital number, since it uses as much as digits as its factorization.

228165445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49139.

The product of its digits is 76800, while the sum is 37.

The square root of 228165445 is about 15105.1463084606. The cubic root of 228165445 is about 611.0592051476.

The spelling of 228165445 in words is "two hundred twenty-eight million, one hundred sixty-five thousand, four hundred forty-five".