224021247 has 8 divisors (see below), whose sum is σ = 298767744. Its totient is φ = 149311128.

The previous prime is 224021243. The next prime is 224021249. The reversal of 224021247 is 742120422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 224021247 - 2² = 224021243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224021243) 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, 12828 + ... + 24750.

It is an arithmetic number, because the mean of its divisors is an integer number (37345968).

Almost surely, 2^224021247 is an apocalyptic number.

224021247 is a deficient number, since it is larger than the sum of its proper divisors (74746497).

224021247 is a wasteful number, since it uses less digits than its factorization.

224021247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18189.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 224021247 is about 14967.3393427155. The cubic root of 224021247 is about 607.3369956746.

Adding to 224021247 its reverse (742120422), we get a palindrome (966141669).

The spelling of 224021247 in words is "two hundred twenty-four million, twenty-one thousand, two hundred forty-seven".