228237306 has 32 divisors (see below), whose sum is σ = 501336000. Its totient is φ = 68695680.

The previous prime is 228237293. The next prime is 228237307. The reversal of 228237306 is 603732822.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (228237307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 21438.

It is an arithmetic number, because the mean of its divisors is an integer number (15666750).

Almost surely, 2^228237306 is an apocalyptic number.

228237306 is an abundant number, since it is smaller than the sum of its proper divisors (273098694).

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

228237306 is a wasteful number, since it uses less digits than its factorization.

228237306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23374.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 228237306 is about 15107.5248138138. The cubic root of 228237306 is about 611.1233497078.

It can be divided in two parts, 22 and 8237306, that added together give a palindrome (8237328).

The spelling of 228237306 in words is "two hundred twenty-eight million, two hundred thirty-seven thousand, three hundred six".