228258845 has 4 divisors (see below), whose sum is σ = 273910620. Its totient is φ = 182607072.

The previous prime is 228258827. The next prime is 228258853. The reversal of 228258845 is 548852822.

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 45954841 + 182304004 = 6779^2 + 13502^2 .

It is a cyclic number.

It is not a de Polignac number, because 228258845 - 2⁶ = 228258781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228258796 and 228258805.

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, 22825880 + ... + 22825889.

It is an arithmetic number, because the mean of its divisors is an integer number (68477655).

Almost surely, 2^228258845 is an apocalyptic number.

It is an amenable number.

228258845 is a deficient number, since it is larger than the sum of its proper divisors (45651775).

228258845 is an equidigital number, since it uses as much as digits as its factorization.

228258845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45651774.

The product of its digits is 409600, while the sum is 44.

The square root of 228258845 is about 15108.2376536775. The cubic root of 228258845 is about 611.1425732256.

The spelling of 228258845 in words is "two hundred twenty-eight million, two hundred fifty-eight thousand, eight hundred forty-five".