228213833 has 4 divisors (see below), whose sum is σ = 228249360. Its totient is φ = 228178308.

The previous prime is 228213781. The next prime is 228213851. The reversal of 228213833 is 338312822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228213833 - 2¹⁴ = 228197449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228213833.

It is not an unprimeable number, because it can be changed into a prime (228213863) 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, 5135 + ... + 21972.

It is an arithmetic number, because the mean of its divisors is an integer number (57062340).

Almost surely, 2^228213833 is an apocalyptic number.

It is an amenable number.

228213833 is a deficient number, since it is larger than the sum of its proper divisors (35527).

228213833 is an equidigital number, since it uses as much as digits as its factorization.

228213833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35526.

The product of its digits is 13824, while the sum is 32.

The square root of 228213833 is about 15106.7479293195. The cubic root of 228213833 is about 611.1023987212.

The spelling of 228213833 in words is "two hundred twenty-eight million, two hundred thirteen thousand, eight hundred thirty-three".