228144533 has 16 divisors (see below), whose sum is σ = 246240000. Its totient is φ = 210696192.

The previous prime is 228144529. The next prime is 228144559. The reversal of 228144533 is 335441822.

It is a cyclic number.

It is not a de Polignac number, because 228144533 - 2² = 228144529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228144533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400673 + ... + 401241.

It is an arithmetic number, because the mean of its divisors is an integer number (15390000).

Almost surely, 2^228144533 is an apocalyptic number.

It is an amenable number.

228144533 is a deficient number, since it is larger than the sum of its proper divisors (18095467).

228144533 is a wasteful number, since it uses less digits than its factorization.

228144533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its digits is 23040, while the sum is 32.

The square root of 228144533 is about 15104.4540781850. The cubic root of 228144533 is about 611.0405361498.

The spelling of 228144533 in words is "two hundred twenty-eight million, one hundred forty-four thousand, five hundred thirty-three".