228122816 has 56 divisors (see below), whose sum is σ = 493014000. Its totient is φ = 104315904.

The previous prime is 228122801. The next prime is 228122821. The reversal of 228122816 is 618221822.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

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, 32030 + ... + 38498.

Almost surely, 2^228122816 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 228122816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246507000).

228122816 is an abundant number, since it is smaller than the sum of its proper divisors (264891184).

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

228122816 is a wasteful number, since it uses less digits than its factorization.

228122816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529 (or 6519 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 228122816 is about 15103.7351671697. The cubic root of 228122816 is about 611.0211472881.

The spelling of 228122816 in words is "two hundred twenty-eight million, one hundred twenty-two thousand, eight hundred sixteen".