228393 has 16 divisors (see below), whose sum is σ = 369600. Its totient is φ = 138240.

The previous prime is 228383. The next prime is 228409. The reversal of 228393 is 393822.

It is a de Polignac number, because none of the positive numbers 2^k-228393 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (228353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (23100).

2²²⁸³⁹³ is an apocalyptic number.

It is an amenable number.

228393 is a deficient number, since it is larger than the sum of its proper divisors (141207).

228393 is a wasteful number, since it uses less digits than its factorization.

228393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 783 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 228393 is about 477.9048022358. The cubic root of 228393 is about 61.1262279101.

The spelling of 228393 in words is "two hundred twenty-eight thousand, three hundred ninety-three".