228585090 has 16 divisors (see below), whose sum is σ = 548604288. Its totient is φ = 60956016.

The previous prime is 228585089. The next prime is 228585107. The reversal of 228585090 is 90585822.

228585090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228585090² = 104502286740616200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3809722 + ... + 3809781.

It is an arithmetic number, because the mean of its divisors is an integer number (34287768).

Almost surely, 2^228585090 is an apocalyptic number.

228585090 is an abundant number, since it is smaller than the sum of its proper divisors (320019198).

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

228585090 is a wasteful number, since it uses less digits than its factorization.

228585090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7619513.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 228585090 is about 15119.0307229002. The cubic root of 228585090 is about 611.4335985210.

The spelling of 228585090 in words is "two hundred twenty-eight million, five hundred eighty-five thousand, ninety".