224397 has 8 divisors (see below), whose sum is σ = 332480. Its totient is φ = 149580.

The previous prime is 224363. The next prime is 224401. The reversal of 224397 is 793422.

It is not a de Polignac number, because 224397 - 2¹¹ = 222349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8311 = 224397 / (2 + 2 + 4 + 3 + 9 + 7).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁵ + 3⁵ + 4⁸ + 9 + 7⁶ .

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 224397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129 + ... + 4182.

It is an arithmetic number, because the mean of its divisors is an integer number (41560).

2²²⁴³⁹⁷ is an apocalyptic number.

224397 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

224397 is a deficient number, since it is larger than the sum of its proper divisors (108083).

224397 is an equidigital number, since it uses as much as digits as its factorization.

224397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320 (or 8314 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 224397 is about 473.7056047800. The cubic root of 224397 is about 60.7676370068.

The spelling of 224397 in words is "two hundred twenty-four thousand, three hundred ninety-seven".