226781505 has 16 divisors (see below), whose sum is σ = 403167360. Its totient is φ = 120950064.

The previous prime is 226781501. The next prime is 226781509. The reversal of 226781505 is 505187622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (226781501) and next prime (226781509).

It is not a de Polignac number, because 226781505 - 2² = 226781501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226781505.

It is not an unprimeable number, because it can be changed into a prime (226781501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 839797 + ... + 840066.

It is an arithmetic number, because the mean of its divisors is an integer number (25197960).

Almost surely, 2^226781505 is an apocalyptic number.

It is an amenable number.

226781505 is a deficient number, since it is larger than the sum of its proper divisors (176385855).

226781505 is a wasteful number, since it uses less digits than its factorization.

226781505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679877 (or 1679871 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 226781505 is about 15059.2664163963. The cubic root of 226781505 is about 609.8212366977.

The spelling of 226781505 in words is "two hundred twenty-six million, seven hundred eighty-one thousand, five hundred five".