228586986 has 48 divisors (see below), whose sum is σ = 531217440. Its totient is φ = 70817760.

The previous prime is 228586951. The next prime is 228586993. The reversal of 228586986 is 689685822.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11821 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (11067030).

Almost surely, 2^228586986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228586986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265608720).

228586986 is an abundant number, since it is smaller than the sum of its proper divisors (302630454).

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

228586986 is a wasteful number, since it uses less digits than its factorization.

228586986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12691 (or 12688 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 228586986 is about 15119.0934252025. The cubic root of 228586986 is about 611.4352890292.

The spelling of 228586986 in words is "two hundred twenty-eight million, five hundred eighty-six thousand, nine hundred eighty-six".