226628537 has 4 divisors (see below), whose sum is σ = 226658676. Its totient is φ = 226598400.

The previous prime is 226628527. The next prime is 226628543. The reversal of 226628537 is 735826622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 220849321 + 5779216 = 14861^2 + 2404^2 .

It is a cyclic number.

It is not a de Polignac number, because 226628537 - 2⁶ = 226628473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 226628494 and 226628503.

It is not an unprimeable number, because it can be changed into a prime (226628527) 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, 6533 + ... + 22269.

It is an arithmetic number, because the mean of its divisors is an integer number (56664669).

Almost surely, 2^226628537 is an apocalyptic number.

It is an amenable number.

226628537 is a deficient number, since it is larger than the sum of its proper divisors (30139).

226628537 is a wasteful number, since it uses less digits than its factorization.

226628537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30138.

The product of its digits is 241920, while the sum is 41.

The square root of 226628537 is about 15054.1866934086. The cubic root of 226628537 is about 609.6840942435.

It can be divided in two parts, 2266 and 28537, that added together give a palindrome (30803).

The spelling of 226628537 in words is "two hundred twenty-six million, six hundred twenty-eight thousand, five hundred thirty-seven".