228653 has 4 divisors (see below), whose sum is σ = 230460. Its totient is φ = 226848.

The previous prime is 228647. The next prime is 228677. The reversal of 228653 is 356822.

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 128164 + 100489 = 358^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 228653 - 2⁴ = 228637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 698 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (57615).

2²²⁸⁶⁵³ is an apocalyptic number.

It is an amenable number.

228653 is a deficient number, since it is larger than the sum of its proper divisors (1807).

228653 is a wasteful number, since it uses less digits than its factorization.

228653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its digits is 2880, while the sum is 26.

The square root of 228653 is about 478.1767455659. The cubic root of 228653 is about 61.1494142488.

The spelling of 228653 in words is "two hundred twenty-eight thousand, six hundred fifty-three".