228021671 has 2 divisors, whose sum is σ = 228021672. Its totient is φ = 228021670.

The previous prime is 228021659. The next prime is 228021719. The reversal of 228021671 is 176120822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228021671 - 2¹⁰ = 228020647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228021271) 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 as a sum of consecutive naturals, namely, 114010835 + 114010836.

It is an arithmetic number, because the mean of its divisors is an integer number (114010836).

Almost surely, 2^228021671 is an apocalyptic number.

228021671 is a deficient number, since it is larger than the sum of its proper divisors (1).

228021671 is an equidigital number, since it uses as much as digits as its factorization.

228021671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 228021671 is about 15100.3864520084. The cubic root of 228021671 is about 610.9308291704.

The spelling of 228021671 in words is "two hundred twenty-eight million, twenty-one thousand, six hundred seventy-one".