228013312 has 36 divisors (see below), whose sum is σ = 470845620. Its totient is φ = 110071808.

The previous prime is 228013307. The next prime is 228013343. The reversal of 228013312 is 213310822.

It can be written as a sum of positive squares in 2 ways, for example, as 167547136 + 60466176 = 12944^2 + 7776^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7933 + ... + 22780.

It is an arithmetic number, because the mean of its divisors is an integer number (13079045).

Almost surely, 2^228013312 is an apocalyptic number.

It is an amenable number.

228013312 is an abundant number, since it is smaller than the sum of its proper divisors (242832308).

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

228013312 is an equidigital number, since it uses as much as digits as its factorization.

228013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30758 (or 30744 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 228013312 is about 15100.1096684759. The cubic root of 228013312 is about 610.9233637495.

The spelling of 228013312 in words is "two hundred twenty-eight million, thirteen thousand, three hundred twelve".