226815487 has 4 divisors (see below), whose sum is σ = 226864240. Its totient is φ = 226766736.

The previous prime is 226815401. The next prime is 226815503. The reversal of 226815487 is 784518622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226815487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226015487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16563 + ... + 26980.

It is an arithmetic number, because the mean of its divisors is an integer number (56716060).

Almost surely, 2^226815487 is an apocalyptic number.

226815487 is a deficient number, since it is larger than the sum of its proper divisors (48753).

226815487 is an equidigital number, since it uses as much as digits as its factorization.

226815487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48752.

The product of its digits is 215040, while the sum is 43.

The square root of 226815487 is about 15060.3946495436. The cubic root of 226815487 is about 609.8516946640.

The spelling of 226815487 in words is "two hundred twenty-six million, eight hundred fifteen thousand, four hundred eighty-seven".