228220884 has 72 divisors (see below), whose sum is σ = 611706368. Its totient is φ = 71616960.

The previous prime is 228220879. The next prime is 228220897. The reversal of 228220884 is 488022822.

228220884 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

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

228220884 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

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, 38529 + ... + 44055.

Almost surely, 2^228220884 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 228220884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305853184).

228220884 is an abundant number, since it is smaller than the sum of its proper divisors (383485484).

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

228220884 is a wasteful number, since it uses less digits than its factorization.

228220884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605 (or 5600 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 228220884 is about 15106.9813000480. The cubic root of 228220884 is about 611.1086922904.

The spelling of 228220884 in words is "two hundred twenty-eight million, two hundred twenty thousand, eight hundred eighty-four".