228287836 has 48 divisors (see below), whose sum is σ = 477775872. Its totient is φ = 93398400.

The previous prime is 228287833. The next prime is 228287881. The reversal of 228287836 is 638782822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228287833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51841 + ... + 56071.

It is an arithmetic number, because the mean of its divisors is an integer number (9953664).

Almost surely, 2^228287836 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 228287836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238887936).

228287836 is an abundant number, since it is smaller than the sum of its proper divisors (249488036).

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

228287836 is a wasteful number, since it uses less digits than its factorization.

228287836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330 (or 4328 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 228287836 is about 15109.1970666876. The cubic root of 228287836 is about 611.1684457306.

The spelling of 228287836 in words is "two hundred twenty-eight million, two hundred eighty-seven thousand, eight hundred thirty-six".