228142033 has 4 divisors (see below), whose sum is σ = 260733760. Its totient is φ = 195550308.

The previous prime is 228142027. The next prime is 228142039. The reversal of 228142033 is 330241822.

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 an interprime number because it is at equal distance from previous prime (228142027) and next prime (228142039).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228142033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228141989 and 228142007.

It is not an unprimeable number, because it can be changed into a prime (228142039) 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, 16295853 + ... + 16295866.

It is an arithmetic number, because the mean of its divisors is an integer number (65183440).

Almost surely, 2^228142033 is an apocalyptic number.

It is an amenable number.

228142033 is a deficient number, since it is larger than the sum of its proper divisors (32591727).

228142033 is an equidigital number, since it uses as much as digits as its factorization.

228142033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32591726.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 228142033 is about 15104.3713209124. The cubic root of 228142033 is about 611.0383042212.

Adding to 228142033 its reverse (330241822), we get a palindrome (558383855).

The spelling of 228142033 in words is "two hundred twenty-eight million, one hundred forty-two thousand, thirty-three".