228671393 has 4 divisors (see below), whose sum is σ = 228931248. Its totient is φ = 228411540.

The previous prime is 228671383. The next prime is 228671419. The reversal of 228671393 is 393176822.

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.

It is a cyclic number.

It is not a de Polignac number, because 228671393 - 2⁶ = 228671329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228671393.

It is not an unprimeable number, because it can be changed into a prime (228671323) 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, 128603 + ... + 130368.

It is an arithmetic number, because the mean of its divisors is an integer number (57232812).

Almost surely, 2^228671393 is an apocalyptic number.

It is an amenable number.

228671393 is a deficient number, since it is larger than the sum of its proper divisors (259855).

228671393 is an equidigital number, since it uses as much as digits as its factorization.

228671393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259854.

The product of its digits is 108864, while the sum is 41.

The square root of 228671393 is about 15121.8845717060. The cubic root of 228671393 is about 611.5105383807.

The spelling of 228671393 in words is "two hundred twenty-eight million, six hundred seventy-one thousand, three hundred ninety-three".