228144726 has 48 divisors (see below), whose sum is σ = 530813088. Its totient is φ = 70560000.

The previous prime is 228144703. The next prime is 228144727. The reversal of 228144726 is 627441822.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16476 + ... + 26976.

It is an arithmetic number, because the mean of its divisors is an integer number (11058606).

Almost surely, 2^228144726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228144726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265406544).

228144726 is an abundant number, since it is smaller than the sum of its proper divisors (302668362).

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

228144726 is a wasteful number, since it uses less digits than its factorization.

228144726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10597 (or 10594 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 228144726 is about 15104.4604670276. The cubic root of 228144726 is about 611.0407084541.

The spelling of 228144726 in words is "two hundred twenty-eight million, one hundred forty-four thousand, seven hundred twenty-six".