228472873 has 4 divisors (see below), whose sum is σ = 230272000. Its totient is φ = 226673748.

The previous prime is 228472847. The next prime is 228472897. The reversal of 228472873 is 378274822.

It is a happy number.

228472873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 378274822 = 2 ⋅189137411.

It is a cyclic number.

It is not a de Polignac number, because 228472873 - 2⁵ = 228472841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228472813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899373 + ... + 899626.

It is an arithmetic number, because the mean of its divisors is an integer number (57568000).

Almost surely, 2^228472873 is an apocalyptic number.

It is an amenable number.

228472873 is a deficient number, since it is larger than the sum of its proper divisors (1799127).

228472873 is a wasteful number, since it uses less digits than its factorization.

228472873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799126.

The product of its digits is 301056, while the sum is 43.

The square root of 228472873 is about 15115.3191497897. The cubic root of 228472873 is about 611.3335271427. Note that the first 3 decimals are identical.

It can be divided in two parts, 2284 and 72873, that added together give a palindrome (75157).

The spelling of 228472873 in words is "two hundred twenty-eight million, four hundred seventy-two thousand, eight hundred seventy-three".