228586545 has 36 divisors (see below), whose sum is σ = 435521268. Its totient is φ = 110827200.

The previous prime is 228586517. The next prime is 228586583. The reversal of 228586545 is 545685822.

It is a happy number.

228586545 is a `hidden beast` number, since 2 + 28 + 5 + 86 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33732864 + 194853681 = 5808^2 + 13959^2 .

It is not a de Polignac number, because 228586545 - 2⁸ = 228586289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 228586545.

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 35 ways as a sum of consecutive naturals, for example, 15546 + ... + 26435.

It is an arithmetic number, because the mean of its divisors is an integer number (12097813).

Almost surely, 2^228586545 is an apocalyptic number.

It is an amenable number.

228586545 is a deficient number, since it is larger than the sum of its proper divisors (206934723).

228586545 is a wasteful number, since it uses less digits than its factorization.

228586545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42014 (or 42000 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 228586545 is about 15119.0788409876. The cubic root of 228586545 is about 611.4348958264.

It can be divided in two parts, 22858 and 6545, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 228586545 in words is "two hundred twenty-eight million, five hundred eighty-six thousand, five hundred forty-five".