228502 has 8 divisors (see below), whose sum is σ = 350856. Its totient is φ = 111552.

The previous prime is 228479. The next prime is 228509. The reversal of 228502 is 205822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 228502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243 + ... + 1414.

It is an arithmetic number, because the mean of its divisors is an integer number (43857).

2²²⁸⁵⁰² is an apocalyptic number.

228502 is a deficient number, since it is larger than the sum of its proper divisors (122354).

228502 is a wasteful number, since it uses less digits than its factorization.

228502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 228502 is about 478.0188280811. The cubic root of 228502 is about 61.1359504778.

Adding to 228502 its product of nonzero digits (320), we get a palindrome (228822).

The spelling of 228502 in words is "two hundred twenty-eight thousand, five hundred two".