228534144 has 32 divisors (see below), whose sum is σ = 607044840. Its totient is φ = 76177920.

The previous prime is 228534143. The next prime is 228534149. The reversal of 228534144 is 441435822.

228534144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228534143) 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, 297187 + ... + 297954.

Almost surely, 2^228534144 is an apocalyptic number.

228534144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

228534144 is an abundant number, since it is smaller than the sum of its proper divisors (378510696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228534144 is an equidigital number, since it uses as much as digits as its factorization.

228534144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595158 (or 595146 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 228534144 is about 15117.3457987836. The cubic root of 228534144 is about 611.3881706374.

Adding to 228534144 its reverse (441435822), we get a palindrome (669969966).

The spelling of 228534144 in words is "two hundred twenty-eight million, five hundred thirty-four thousand, one hundred forty-four".