228655837 has 4 divisors (see below), whose sum is σ = 229156636. Its totient is φ = 228155040.

The previous prime is 228655829. The next prime is 228655849. The reversal of 228655837 is 738556822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157101156 + 71554681 = 12534^2 + 8459^2 .

It is a cyclic number.

It is not a de Polignac number, because 228655837 - 2³ = 228655829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228655337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249714 + ... + 250627.

It is an arithmetic number, because the mean of its divisors is an integer number (57289159).

Almost surely, 2^228655837 is an apocalyptic number.

It is an amenable number.

228655837 is a deficient number, since it is larger than the sum of its proper divisors (500799).

228655837 is an equidigital number, since it uses as much as digits as its factorization.

228655837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500798.

The product of its digits is 806400, while the sum is 46.

The square root of 228655837 is about 15121.3702090783. The cubic root of 228655837 is about 611.4966715046.

The spelling of 228655837 in words is "two hundred twenty-eight million, six hundred fifty-five thousand, eight hundred thirty-seven".