224366381 has 4 divisors (see below), whose sum is σ = 224396700. Its totient is φ = 224336064.

The previous prime is 224366371. The next prime is 224366393. The reversal of 224366381 is 183663422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 183663422 = 2 ⋅91831711.

It can be written as a sum of positive squares in 2 ways, for example, as 63457156 + 160909225 = 7966^2 + 12685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224366381 is a prime.

It is a super-2 number, since 2×224366381² = 100680545846074322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224366341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4085 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (56099175).

Almost surely, 2^224366381 is an apocalyptic number.

It is an amenable number.

224366381 is a deficient number, since it is larger than the sum of its proper divisors (30319).

224366381 is a wasteful number, since it uses less digits than its factorization.

224366381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30318.

The product of its digits is 41472, while the sum is 35.

The square root of 224366381 is about 14978.8644763213. The cubic root of 224366381 is about 607.6487296377.

The spelling of 224366381 in words is "two hundred twenty-four million, three hundred sixty-six thousand, three hundred eighty-one".