228105312 has 24 divisors (see below), whose sum is σ = 598776696. Its totient is φ = 76035072.

The previous prime is 228105289. The next prime is 228105313. The reversal of 228105312 is 213501822.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228105313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187953 + ... + 1188144.

It is an arithmetic number, because the mean of its divisors is an integer number (24949029).

Almost surely, 2^228105312 is an apocalyptic number.

It is an amenable number.

228105312 is an abundant number, since it is smaller than the sum of its proper divisors (370671384).

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

228105312 is a wasteful number, since it uses less digits than its factorization.

228105312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376110 (or 2376102 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 228105312 is about 15103.1556967410. The cubic root of 228105312 is about 611.0055188825.

The spelling of 228105312 in words is "two hundred twenty-eight million, one hundred five thousand, three hundred twelve".