228763145 has 8 divisors (see below), whose sum is σ = 295632456. Its totient is φ = 168932736.

The previous prime is 228763133. The next prime is 228763159. The reversal of 228763145 is 541367822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26327161 + 202435984 = 5131^2 + 14228^2 .

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 228763145 - 2¹⁴ = 228746761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228763099 and 228763108.

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, 1759652 + ... + 1759781.

It is an arithmetic number, because the mean of its divisors is an integer number (36954057).

Almost surely, 2^228763145 is an apocalyptic number.

It is an amenable number.

228763145 is a deficient number, since it is larger than the sum of its proper divisors (66869311).

228763145 is a wasteful number, since it uses less digits than its factorization.

228763145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519451.

The product of its digits is 80640, while the sum is 38.

The square root of 228763145 is about 15124.9180163067. The cubic root of 228763145 is about 611.5923148427.

The spelling of 228763145 in words is "two hundred twenty-eight million, seven hundred sixty-three thousand, one hundred forty-five".