228606549 has 4 divisors (see below), whose sum is σ = 304808736. Its totient is φ = 152404364.

The previous prime is 228606541. The next prime is 228606569. The reversal of 228606549 is 945606822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228606549 - 2³ = 228606541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228606549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228606541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38101089 + ... + 38101094.

It is an arithmetic number, because the mean of its divisors is an integer number (76202184).

Almost surely, 2^228606549 is an apocalyptic number.

It is an amenable number.

228606549 is a deficient number, since it is larger than the sum of its proper divisors (76202187).

228606549 is an equidigital number, since it uses as much as digits as its factorization.

228606549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76202186.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 228606549 is about 15119.7403747551. The cubic root of 228606549 is about 611.4527312111.

The spelling of 228606549 in words is "two hundred twenty-eight million, six hundred six thousand, five hundred forty-nine".