228144047 has 4 divisors (see below), whose sum is σ = 229123440. Its totient is φ = 227164656.

The previous prime is 228144043. The next prime is 228144071. The reversal of 228144047 is 740441822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740441822 = 2 ⋅370220911.

It is a cyclic number.

It is not a de Polignac number, because 228144047 - 2² = 228144043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144041) 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, 489347 + ... + 489812.

It is an arithmetic number, because the mean of its divisors is an integer number (57280860).

Almost surely, 2^228144047 is an apocalyptic number.

228144047 is a deficient number, since it is larger than the sum of its proper divisors (979393).

228144047 is an equidigital number, since it uses as much as digits as its factorization.

228144047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979392.

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 228144047 is about 15104.4379902067. The cubic root of 228144047 is about 611.0401022642.

Adding to 228144047 its reverse (740441822), we get a palindrome (968585869).

The spelling of 228144047 in words is "two hundred twenty-eight million, one hundred forty-four thousand, forty-seven".