228585087 has 12 divisors (see below), whose sum is σ = 330701904. Its totient is φ = 152148480.

The previous prime is 228585079. The next prime is 228585089. The reversal of 228585087 is 780585822.

It is not a de Polignac number, because 228585087 - 2³ = 228585079 is a prime.

It is a super-2 number, since 2×228585087² = 104502283997595138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228585089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14043 + ... + 25580.

It is an arithmetic number, because the mean of its divisors is an integer number (27558492).

Almost surely, 2^228585087 is an apocalyptic number.

228585087 is a deficient number, since it is larger than the sum of its proper divisors (102116817).

228585087 is a wasteful number, since it uses less digits than its factorization.

228585087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40270 (or 40267 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 228585087 is about 15119.0306236875. The cubic root of 228585087 is about 611.4335958462.

The spelling of 228585087 in words is "two hundred twenty-eight million, five hundred eighty-five thousand, eighty-seven".