224739 has 6 divisors (see below), whose sum is σ = 324636. Its totient is φ = 149820.

The previous prime is 224737. The next prime is 224743. The reversal of 224739 is 937422.

It is not a de Polignac number, because 224739 - 2¹ = 224737 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁵ + 7 + 4³ + 3¹¹ + 9⁴ .

It is not an unprimeable number, because it can be changed into a prime (224737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12477 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (54106).

2²²⁴⁷³⁹ is an apocalyptic number.

224739 is a deficient number, since it is larger than the sum of its proper divisors (99897).

224739 is a wasteful number, since it uses less digits than its factorization.

224739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24977 (or 24974 counting only the distinct ones).

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

The square root of 224739 is about 474.0664510382. The cubic root of 224739 is about 60.7984930086.

It can be divided in two parts, 22 and 4739, that added together give a square (4761 = 69²).

The spelling of 224739 in words is "two hundred twenty-four thousand, seven hundred thirty-nine".