223628417 has 4 divisors (see below), whose sum is σ = 223658820. Its totient is φ = 223598016.

The previous prime is 223628399. The next prime is 223628429. The reversal of 223628417 is 714826322.

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 140161921 + 83466496 = 11839^2 + 9136^2 .

It is a cyclic number.

It is not a de Polignac number, because 223628417 - 2⁸ = 223628161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223628437) 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, 3509 + ... + 21437.

It is an arithmetic number, because the mean of its divisors is an integer number (55914705).

Almost surely, 2^223628417 is an apocalyptic number.

It is an amenable number.

223628417 is a deficient number, since it is larger than the sum of its proper divisors (30403).

223628417 is a wasteful number, since it uses less digits than its factorization.

223628417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30402.

The product of its digits is 32256, while the sum is 35.

The square root of 223628417 is about 14954.2106779328. The cubic root of 223628417 is about 606.9817915969.

The spelling of 223628417 in words is "two hundred twenty-three million, six hundred twenty-eight thousand, four hundred seventeen".