228326149 has 4 divisors (see below), whose sum is σ = 234497164. Its totient is φ = 222155136.

The previous prime is 228326143. The next prime is 228326159. The reversal of 228326149 is 941623822.

It is a happy number.

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 214769025 + 13557124 = 14655^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 228326149 - 2⁹ = 228325637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 6170977 = 228326149 / (2 + 2 + 8 + 3 + 2 + 6 + 1 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228326143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3085452 + ... + 3085525.

It is an arithmetic number, because the mean of its divisors is an integer number (58624291).

Almost surely, 2^228326149 is an apocalyptic number.

It is an amenable number.

228326149 is a deficient number, since it is larger than the sum of its proper divisors (6171015).

228326149 is an equidigital number, since it uses as much as digits as its factorization.

228326149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171014.

The product of its digits is 41472, while the sum is 37.

The square root of 228326149 is about 15110.4648836493. The cubic root of 228326149 is about 611.2026341295.

The spelling of 228326149 in words is "two hundred twenty-eight million, three hundred twenty-six thousand, one hundred forty-nine".