228355712 has 64 divisors (see below), whose sum is σ = 503298600. Its totient is φ = 102518784.

The previous prime is 228355697. The next prime is 228355717. The reversal of 228355712 is 217553822.

It can be written as a sum of positive squares in 4 ways, for example, as 179131456 + 49224256 = 13384^2 + 7016^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (228355717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59714 + ... + 63422.

Almost surely, 2^228355712 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 228355712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251649300).

228355712 is an abundant number, since it is smaller than the sum of its proper divisors (274942888).

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

228355712 is a wasteful number, since it uses less digits than its factorization.

228355712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773 (or 3761 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 228355712 is about 15111.4430813209. The cubic root of 228355712 is about 611.2290118992.

The spelling of 228355712 in words is "two hundred twenty-eight million, three hundred fifty-five thousand, seven hundred twelve".