228028586 has 4 divisors (see below), whose sum is σ = 342042882. Its totient is φ = 114014292.

The previous prime is 228028571. The next prime is 228028607. The reversal of 228028586 is 685820822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 685820822 = 2 ⋅342910411.

It can be written as a sum of positive squares in only one way, i.e., 132595225 + 95433361 = 11515^2 + 9769^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57007145 + ... + 57007148.

Almost surely, 2^228028586 is an apocalyptic number.

228028586 is a deficient number, since it is larger than the sum of its proper divisors (114014296).

228028586 is a wasteful number, since it uses less digits than its factorization.

228028586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114014295.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 228028586 is about 15100.6154179225. The cubic root of 228028586 is about 610.9370048173.

The spelling of 228028586 in words is "two hundred twenty-eight million, twenty-eight thousand, five hundred eighty-six".