228065773 has 8 divisors (see below), whose sum is σ = 254079000. Its totient is φ = 203262528.

The previous prime is 228065737. The next prime is 228065801. The reversal of 228065773 is 377560822.

It can be written as a sum of positive squares in 4 ways, for example, as 20187049 + 207878724 = 4493^2 + 14418^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228065773 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 (228005773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302098 + ... + 302851.

It is an arithmetic number, because the mean of its divisors is an integer number (31759875).

Almost surely, 2^228065773 is an apocalyptic number.

It is an amenable number.

228065773 is a deficient number, since it is larger than the sum of its proper divisors (26013227).

228065773 is a wasteful number, since it uses less digits than its factorization.

228065773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604991.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 228065773 is about 15101.8466751586. The cubic root of 228065773 is about 610.9702136354.

The spelling of 228065773 in words is "two hundred twenty-eight million, sixty-five thousand, seven hundred seventy-three".