228144547 has 4 divisors (see below), whose sum is σ = 228341880. Its totient is φ = 227947216.

The previous prime is 228144529. The next prime is 228144559. The reversal of 228144547 is 745441822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228144547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228144517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96922 + ... + 99247.

It is an arithmetic number, because the mean of its divisors is an integer number (57085470).

Almost surely, 2^228144547 is an apocalyptic number.

228144547 is a deficient number, since it is larger than the sum of its proper divisors (197333).

228144547 is a wasteful number, since it uses less digits than its factorization.

228144547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197332.

The product of its digits is 71680, while the sum is 37.

The square root of 228144547 is about 15104.4545416245. The cubic root of 228144547 is about 611.0405486486.

The spelling of 228144547 in words is "two hundred twenty-eight million, one hundred forty-four thousand, five hundred forty-seven".