228744133120 has 160 divisors (see below), whose sum is σ = 562280476032. Its totient is φ = 89211912192.

The previous prime is 228744133109. The next prime is 228744133127. The reversal of 228744133120 is 21331447822.

It is a tau number, because it is divible by the number of its divisors (160).

It is a self number, because there is not a number n which added to its sum of digits gives 228744133120.

It is not an unprimeable number, because it can be changed into a prime (228744133127) 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, 22110669 + ... + 22121011.

Almost surely, 2^228744133120 is an apocalyptic number.

228744133120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228744133120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281140238016).

228744133120 is an abundant number, since it is smaller than the sum of its proper divisors (333536342912).

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

228744133120 is a wasteful number, since it uses less digits than its factorization.

228744133120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10582 (or 10566 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 228744133120 in words is "two hundred twenty-eight billion, seven hundred forty-four million, one hundred thirty-three thousand, one hundred twenty".