228826637 has 4 divisors (see below), whose sum is σ = 246428700. Its totient is φ = 211224576.

The previous prime is 228826627. The next prime is 228826639. The reversal of 228826637 is 736628822.

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 69789316 + 159037321 = 8354^2 + 12611^2 .

It is a cyclic number.

It is not a de Polignac number, because 228826637 - 2¹⁰ = 228825613 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228826639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8801012 + ... + 8801037.

It is an arithmetic number, because the mean of its divisors is an integer number (61607175).

Almost surely, 2^228826637 is an apocalyptic number.

It is an amenable number.

228826637 is a deficient number, since it is larger than the sum of its proper divisors (17602063).

228826637 is a wasteful number, since it uses less digits than its factorization.

228826637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17602062.

The product of its digits is 387072, while the sum is 44.

The square root of 228826637 is about 15127.0167911588. The cubic root of 228826637 is about 611.6488910121.

The spelling of 228826637 in words is "two hundred twenty-eight million, eight hundred twenty-six thousand, six hundred thirty-seven".