224256813 has 16 divisors (see below), whose sum is σ = 327255552. Its totient is φ = 135470000.

The previous prime is 224256811. The next prime is 224256847. The reversal of 224256813 is 318652422.

It is a cyclic number.

It is not a de Polignac number, because 224256813 - 2¹ = 224256811 is a prime.

It is a super-2 number, since 2×224256813² = 100582236353833938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224256811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663 + ... + 21188.

It is an arithmetic number, because the mean of its divisors is an integer number (20453472).

Almost surely, 2^224256813 is an apocalyptic number.

It is an amenable number.

224256813 is a deficient number, since it is larger than the sum of its proper divisors (102998739).

224256813 is a wasteful number, since it uses less digits than its factorization.

224256813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22176.

The product of its digits is 23040, while the sum is 33.

The square root of 224256813 is about 14975.2066095931. The cubic root of 224256813 is about 607.5497996399.

The spelling of 224256813 in words is "two hundred twenty-four million, two hundred fifty-six thousand, eight hundred thirteen".