228494573 has 4 divisors (see below), whose sum is σ = 234670140. Its totient is φ = 222319008.

The previous prime is 228494557. The next prime is 228494579. The reversal of 228494573 is 375494822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214974244 + 13520329 = 14662^2 + 3677^2 .

It is a cyclic number.

It is not a de Polignac number, because 228494573 - 2⁴ = 228494557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228494579) 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 in 3 ways as a sum of consecutive naturals, for example, 3087728 + ... + 3087801.

It is an arithmetic number, because the mean of its divisors is an integer number (58667535).

Almost surely, 2^228494573 is an apocalyptic number.

It is an amenable number.

228494573 is a deficient number, since it is larger than the sum of its proper divisors (6175567).

228494573 is an equidigital number, since it uses as much as digits as its factorization.

228494573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6175566.

The product of its digits is 483840, while the sum is 44.

The square root of 228494573 is about 15116.0369475600. The cubic root of 228494573 is about 611.3528810342.

The spelling of 228494573 in words is "two hundred twenty-eight million, four hundred ninety-four thousand, five hundred seventy-three".