228236628 has 24 divisors (see below), whose sum is σ = 563879232. Its totient is φ = 71603584.

The previous prime is 228236621. The next prime is 228236629. The reversal of 228236628 is 826632822.

It is a hoax number, since the sum of its digits (39) 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 (228236621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559200 + ... + 559607.

It is an arithmetic number, because the mean of its divisors is an integer number (23494968).

Almost surely, 2^228236628 is an apocalyptic number.

It is an amenable number.

228236628 is an abundant number, since it is smaller than the sum of its proper divisors (335642604).

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

228236628 is a wasteful number, since it uses less digits than its factorization.

228236628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118831 (or 1118829 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 228236628 is about 15107.5023746482. The cubic root of 228236628 is about 611.1227445744.

The spelling of 228236628 in words is "two hundred twenty-eight million, two hundred thirty-six thousand, six hundred twenty-eight".