228826505 has 4 divisors (see below), whose sum is σ = 274591812. Its totient is φ = 183061200.

The previous prime is 228826489. The next prime is 228826513. The reversal of 228826505 is 505628822.

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 48622729 + 180203776 = 6973^2 + 13424^2 .

It is not a de Polignac number, because 228826505 - 2⁴ = 228826489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22882646 + ... + 22882655.

It is an arithmetic number, because the mean of its divisors is an integer number (68647953).

Almost surely, 2^228826505 is an apocalyptic number.

It is an amenable number.

228826505 is a deficient number, since it is larger than the sum of its proper divisors (45765307).

228826505 is an equidigital number, since it uses as much as digits as its factorization.

228826505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45765306.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 228826505 is about 15127.0124281036. The cubic root of 228826505 is about 611.6487734010.

The spelling of 228826505 in words is "two hundred twenty-eight million, eight hundred twenty-six thousand, five hundred five".