228136288 has 12 divisors (see below), whose sum is σ = 449143380. Its totient is φ = 114068128.

The previous prime is 228136253. The next prime is 228136289. The reversal of 228136288 is 882631822.

It is a self number, because there is not a number n which added to its sum of digits gives 228136288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228136289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3564598 + ... + 3564661.

It is an arithmetic number, because the mean of its divisors is an integer number (37428615).

Almost surely, 2^228136288 is an apocalyptic number.

It is an amenable number.

228136288 is a deficient number, since it is larger than the sum of its proper divisors (221007092).

228136288 is an equidigital number, since it uses as much as digits as its factorization.

228136288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129269 (or 7129261 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 228136288 is about 15104.1811429816. The cubic root of 228136288 is about 611.0331751876.

The spelling of 228136288 in words is "two hundred twenty-eight million, one hundred thirty-six thousand, two hundred eighty-eight".