228706332 has 12 divisors (see below), whose sum is σ = 533648136. Its totient is φ = 76235440.

The previous prime is 228706301. The next prime is 228706337. The reversal of 228706332 is 233607822.

228706332 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

228706332 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 228706293 and 228706302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228706337) 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, 9529419 + ... + 9529442.

It is an arithmetic number, because the mean of its divisors is an integer number (44470678).

Almost surely, 2^228706332 is an apocalyptic number.

It is an amenable number.

228706332 is an abundant number, since it is smaller than the sum of its proper divisors (304941804).

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

228706332 is a wasteful number, since it uses less digits than its factorization.

228706332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19058868 (or 19058866 counting only the distinct ones).

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

The square root of 228706332 is about 15123.0397738021. The cubic root of 228706332 is about 611.5416812919.

The spelling of 228706332 in words is "two hundred twenty-eight million, seven hundred six thousand, three hundred thirty-two".