228732090 has 16 divisors (see below), whose sum is σ = 548957088. Its totient is φ = 60995216.

The previous prime is 228732083. The next prime is 228732121. The reversal of 228732090 is 90237822.

228732090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3812172 + ... + 3812231.

It is an arithmetic number, because the mean of its divisors is an integer number (34309818).

Almost surely, 2^228732090 is an apocalyptic number.

228732090 is an abundant number, since it is smaller than the sum of its proper divisors (320224998).

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

228732090 is a wasteful number, since it uses less digits than its factorization.

228732090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624413.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 228732090 is about 15123.8913643282. The cubic root of 228732090 is about 611.5646386789.

The spelling of 228732090 in words is "two hundred twenty-eight million, seven hundred thirty-two thousand, ninety".