228433 has 4 divisors (see below), whose sum is σ = 236340. Its totient is φ = 220528.

The previous prime is 228427. The next prime is 228443. The reversal of 228433 is 334822.

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 73984 + 154449 = 272^2 + 393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228443) 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, 3910 + ... + 3967.

It is an arithmetic number, because the mean of its divisors is an integer number (59085).

2²²⁸⁴³³ is an apocalyptic number.

It is an amenable number.

228433 is a deficient number, since it is larger than the sum of its proper divisors (7907).

228433 is an equidigital number, since it uses as much as digits as its factorization.

228433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7906.

The product of its digits is 1152, while the sum is 22.

The square root of 228433 is about 477.9466497424. The cubic root of 228433 is about 61.1297961841.

The spelling of 228433 in words is "two hundred twenty-eight thousand, four hundred thirty-three".