228241664 has 72 divisors (see below), whose sum is σ = 528725568. Its totient is φ = 96307200.

The previous prime is 228241649. The next prime is 228241669. The reversal of 228241664 is 466142822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228241669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119114 + ... + 121014.

Almost surely, 2^228241664 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 228241664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264362784).

228241664 is an abundant number, since it is smaller than the sum of its proper divisors (300483904).

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

228241664 is an equidigital number, since it uses as much as digits as its factorization.

228241664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1977 counting only the distinct ones).

The product of its digits is 36864, while the sum is 35.

The square root of 228241664 is about 15107.6690458853. The cubic root of 228241664 is about 611.1272393123.

The spelling of 228241664 in words is "two hundred twenty-eight million, two hundred forty-one thousand, six hundred sixty-four".