226538 has 8 divisors (see below), whose sum is σ = 365988. Its totient is φ = 104544.

The previous prime is 226531. The next prime is 226547. The reversal of 226538 is 835622.

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 2809 = 473^2 + 53^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 8713 = 226538 / (2 + 2 + 6 + 5 + 3 + 8).

It is not an unprimeable number, because it can be changed into a prime (226531) by changing a digit.

226538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 4331 + ... + 4382.

2²²⁶⁵³⁸ is an apocalyptic number.

226538 is a deficient number, since it is larger than the sum of its proper divisors (139450).

226538 is a wasteful number, since it uses less digits than its factorization.

226538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728.

The product of its digits is 2880, while the sum is 26.

The square root of 226538 is about 475.9600823599. The cubic root of 226538 is about 60.9602894818.

The spelling of 226538 in words is "two hundred twenty-six thousand, five hundred thirty-eight".