228237312 has 112 divisors (see below), whose sum is σ = 627534432. Its totient is φ = 73728000.

The previous prime is 228237307. The next prime is 228237319. The reversal of 228237312 is 213732822.

It is a self number, because there is not a number n which added to its sum of digits gives 228237312.

It is not an unprimeable number, because it can be changed into a prime (228237319) 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, 909187 + ... + 909437.

It is an arithmetic number, because the mean of its divisors is an integer number (5602986).

Almost surely, 2^228237312 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 228237312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313767216).

228237312 is an abundant number, since it is smaller than the sum of its proper divisors (399297120).

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

228237312 is an equidigital number, since it uses as much as digits as its factorization.

228237312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 293 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 228237312 is about 15107.5250123903. The cubic root of 228237312 is about 611.1233550629.

It can be divided in two parts, 22823 and 7312, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 228237312 in words is "two hundred twenty-eight million, two hundred thirty-seven thousand, three hundred twelve".