228136673 has 4 divisors (see below), whose sum is σ = 230229780. Its totient is φ = 226043568.

The previous prime is 228136627. The next prime is 228136681. The reversal of 228136673 is 376631822.

228136673 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.

It can be written as a sum of positive squares in 2 ways, for example, as 57259489 + 170877184 = 7567^2 + 13072^2 .

It is a cyclic number.

It is not a de Polignac number, because 228136673 - 2¹⁸ = 227874529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228136603) 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, 1046390 + ... + 1046607.

It is an arithmetic number, because the mean of its divisors is an integer number (57557445).

Almost surely, 2^228136673 is an apocalyptic number.

It is an amenable number.

228136673 is a deficient number, since it is larger than the sum of its proper divisors (2093107).

228136673 is a wasteful number, since it uses less digits than its factorization.

228136673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093106.

The product of its digits is 72576, while the sum is 38.

The square root of 228136673 is about 15104.1938877916. The cubic root of 228136673 is about 611.0335189114.

The spelling of 228136673 in words is "two hundred twenty-eight million, one hundred thirty-six thousand, six hundred seventy-three".