224790817 has 4 divisors (see below), whose sum is σ = 224829316. Its totient is φ = 224752320.

The previous prime is 224790793. The next prime is 224790821. The reversal of 224790817 is 718097422.

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 173080336 + 51710481 = 13156^2 + 7191^2 .

It is a cyclic number.

It is not a de Polignac number, because 224790817 - 2⁷ = 224790689 is a prime.

It is a super-2 number, since 2×224790817² = 101061822815054978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224790817.

It is not an unprimeable number, because it can be changed into a prime (224790857) 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 3 ways as a sum of consecutive naturals, for example, 8484 + ... + 22837.

It is an arithmetic number, because the mean of its divisors is an integer number (56207329).

Almost surely, 2^224790817 is an apocalyptic number.

It is an amenable number.

224790817 is a deficient number, since it is larger than the sum of its proper divisors (38499).

224790817 is an equidigital number, since it uses as much as digits as its factorization.

224790817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38498.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 224790817 is about 14993.0256119304. The cubic root of 224790817 is about 608.0316532242.

The spelling of 224790817 in words is "two hundred twenty-four million, seven hundred ninety thousand, eight hundred seventeen".