228623 has 6 divisors (see below), whose sum is σ = 236376. Its totient is φ = 221112.

The previous prime is 228619. The next prime is 228637. The reversal of 228623 is 326822.

It is not a de Polignac number, because 228623 - 2² = 228619 is a prime.

It is a super-2 number, since 2×228623² = 104536952258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2² + 2¹⁰ + 6⁴ + 8⁵ + 2¹⁴ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1286 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (39396).

2²²⁸⁶²³ is an apocalyptic number.

228623 is a deficient number, since it is larger than the sum of its proper divisors (7753).

228623 is an equidigital number, since it uses as much as digits as its factorization.

228623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 204 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 228623 is about 478.1453753828. The cubic root of 228623 is about 61.1467397994.

It can be divided in two parts, 22862 and 3, that multiplied together give a palindrome (68586).

The spelling of 228623 in words is "two hundred twenty-eight thousand, six hundred twenty-three".