228138373 has 8 divisors (see below), whose sum is σ = 229975200. Its totient is φ = 226308240.

The previous prime is 228138343. The next prime is 228138401. The reversal of 228138373 is 373831822.

228138373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 228138373 - 2²⁵ = 194583941 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 (228138343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83178 + ... + 85876.

It is an arithmetic number, because the mean of its divisors is an integer number (28746900).

Almost surely, 2^228138373 is an apocalyptic number.

It is an amenable number.

228138373 is a deficient number, since it is larger than the sum of its proper divisors (1836827).

228138373 is a wasteful number, since it uses less digits than its factorization.

228138373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347.

The product of its digits is 48384, while the sum is 37.

The square root of 228138373 is about 15104.2501634474. The cubic root of 228138373 is about 611.0350366484.

It can be divided in two parts, 228 and 138373, that added together give a triangular number (138601 = T₅₂₆).

The spelling of 228138373 in words is "two hundred twenty-eight million, one hundred thirty-eight thousand, three hundred seventy-three".