227787228 has 72 divisors (see below), whose sum is σ = 617788080. Its totient is φ = 73301760.

The previous prime is 227787227. The next prime is 227787247. The reversal of 227787228 is 822787722.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227787221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24148 + ... + 32228.

It is an arithmetic number, because the mean of its divisors is an integer number (8580390).

Almost surely, 2^227787228 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 227787228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308894040).

227787228 is an abundant number, since it is smaller than the sum of its proper divisors (390000852).

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

227787228 is a wasteful number, since it uses less digits than its factorization.

227787228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129 (or 8115 counting only the distinct ones).

The product of its digits is 351232, while the sum is 45.

The square root of 227787228 is about 15092.6216410536. The cubic root of 227787228 is about 610.7213789441.

The spelling of 227787228 in words is "two hundred twenty-seven million, seven hundred eighty-seven thousand, two hundred twenty-eight".