228259724 has 72 divisors (see below), whose sum is σ = 508102560. Its totient is φ = 87816960.

The previous prime is 228259709. The next prime is 228259729. The reversal of 228259724 is 427952822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228259729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301154 + ... + 301910.

It is an arithmetic number, because the mean of its divisors is an integer number (7056980).

Almost surely, 2^228259724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228259724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254051280).

228259724 is an abundant number, since it is smaller than the sum of its proper divisors (279842836).

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

228259724 is a wasteful number, since it uses less digits than its factorization.

228259724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 866 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 228259724 is about 15108.2667437400. The cubic root of 228259724 is about 611.1433577058.

It can be divided in two parts, 228 and 259724, that added together give a palindrome (259952).

The spelling of 228259724 in words is "two hundred twenty-eight million, two hundred fifty-nine thousand, seven hundred twenty-four".