228132073 has 8 divisors (see below), whose sum is σ = 245861000. Its totient is φ = 210428928.

The previous prime is 228132041. The next prime is 228132089. The reversal of 228132073 is 370231822.

It can be written as a sum of positive squares in 4 ways, for example, as 363609 + 227768464 = 603^2 + 15092^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 228132073 - 2⁵ = 228132041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228132973) 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, 14473 + ... + 25801.

It is an arithmetic number, because the mean of its divisors is an integer number (30732625).

Almost surely, 2^228132073 is an apocalyptic number.

It is an amenable number.

228132073 is a deficient number, since it is larger than the sum of its proper divisors (17728927).

228132073 is a wasteful number, since it uses less digits than its factorization.

228132073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 228132073 is about 15104.0416114363. The cubic root of 228132073 is about 611.0294120558.

Adding to 228132073 its reverse (370231822), we get a palindrome (598363895).

The spelling of 228132073 in words is "two hundred twenty-eight million, one hundred thirty-two thousand, seventy-three".