228555236 has 48 divisors (see below), whose sum is σ = 494183424. Its totient is φ = 90066816.

The previous prime is 228555181. The next prime is 228555241. The reversal of 228555236 is 632555822.

It is a self number, because there is not a number n which added to its sum of digits gives 228555236.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105581 + ... + 107723.

It is an arithmetic number, because the mean of its divisors is an integer number (10295488).

Almost surely, 2^228555236 is an apocalyptic number.

228555236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228555236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247091712).

228555236 is an abundant number, since it is smaller than the sum of its proper divisors (265628188).

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

228555236 is a wasteful number, since it uses less digits than its factorization.

228555236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460 (or 2458 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 228555236 is about 15118.0433919208. The cubic root of 228555236 is about 611.4069789175.

The spelling of 228555236 in words is "two hundred twenty-eight million, five hundred fifty-five thousand, two hundred thirty-six".