228332664 has 96 divisors (see below), whose sum is σ = 709020000. Its totient is φ = 65028096.

The previous prime is 228332651. The next prime is 228332693. The reversal of 228332664 is 466233822.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225792 + ... + 226800.

It is an arithmetic number, because the mean of its divisors is an integer number (7385625).

Almost surely, 2^228332664 is an apocalyptic number.

228332664 is a gapful number since it is divisible by the number (24) 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 228332664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354510000).

228332664 is an abundant number, since it is smaller than the sum of its proper divisors (480687336).

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

228332664 is a wasteful number, since it uses less digits than its factorization.

228332664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1470 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 228332664 is about 15110.6804611837. The cubic root of 228332664 is about 611.2084473742.

The spelling of 228332664 in words is "two hundred twenty-eight million, three hundred thirty-two thousand, six hundred sixty-four".