228085829 has 4 divisors (see below), whose sum is σ = 233648940. Its totient is φ = 222522720.

The previous prime is 228085813. The next prime is 228085843. The reversal of 228085829 is 928580822.

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 43533604 + 184552225 = 6598^2 + 13585^2 .

It is a cyclic number.

It is not a de Polignac number, because 228085829 - 2⁴ = 228085813 is a prime.

It is a super-3 number, since 3×228085829³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228085829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228085849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2781494 + ... + 2781575.

It is an arithmetic number, because the mean of its divisors is an integer number (58412235).

Almost surely, 2^228085829 is an apocalyptic number.

It is an amenable number.

228085829 is a deficient number, since it is larger than the sum of its proper divisors (5563111).

228085829 is an equidigital number, since it uses as much as digits as its factorization.

228085829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563110.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 228085829 is about 15102.5106853132. The cubic root of 228085829 is about 610.9881225910.

The spelling of 228085829 in words is "two hundred twenty-eight million, eighty-five thousand, eight hundred twenty-nine".