228201688 has 64 divisors (see below), whose sum is σ = 514483200. Its totient is φ = 93502080.

The previous prime is 228201683. The next prime is 228201689. The reversal of 228201688 is 886102822.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228201683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 46873 + ... + 51511.

It is an arithmetic number, because the mean of its divisors is an integer number (8038800).

Almost surely, 2^228201688 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 228201688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257241600).

228201688 is an abundant number, since it is smaller than the sum of its proper divisors (286281512).

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

228201688 is a wasteful number, since it uses less digits than its factorization.

228201688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4708 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 228201688 is about 15106.3459512882. The cubic root of 228201688 is about 611.0915580545.

The spelling of 228201688 in words is "two hundred twenty-eight million, two hundred one thousand, six hundred eighty-eight".