228135585 has 32 divisors (see below), whose sum is σ = 377094528. Its totient is φ = 117711360.

The previous prime is 228135581. The next prime is 228135613. The reversal of 228135585 is 585531822.

It is not a de Polignac number, because 228135585 - 2² = 228135581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228135581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56070 + ... + 60000.

It is an arithmetic number, because the mean of its divisors is an integer number (11784204).

Almost surely, 2^228135585 is an apocalyptic number.

It is an amenable number.

228135585 is a deficient number, since it is larger than the sum of its proper divisors (148958943).

228135585 is a wasteful number, since it uses less digits than its factorization.

228135585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065.

The product of its digits is 96000, while the sum is 39.

The square root of 228135585 is about 15104.1578712618. The cubic root of 228135585 is about 611.0325475558.

The spelling of 228135585 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, five hundred eighty-five".