228247056 has 60 divisors (see below), whose sum is σ = 647554908. Its totient is φ = 75036672.

The previous prime is 228247021. The next prime is 228247121. The reversal of 228247056 is 650742822.

It can be written as a sum of positive squares in 2 ways, for example, as 93315600 + 134931456 = 9660^2 + 11616^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 228247056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345 + ... + 21368.

Almost surely, 2^228247056 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 228247056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323777454).

228247056 is an abundant number, since it is smaller than the sum of its proper divisors (419307852).

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

228247056 is a wasteful number, since it uses less digits than its factorization.

228247056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21800 (or 21791 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 228247056 is about 15107.8474972446. The cubic root of 228247056 is about 611.1320517146.

Adding to 228247056 its reverse (650742822), we get a palindrome (878989878).

The spelling of 228247056 in words is "two hundred twenty-eight million, two hundred forty-seven thousand, fifty-six".