224390 has 16 divisors (see below), whose sum is σ = 425520. Its totient is φ = 84960.

The previous prime is 224363. The next prime is 224401. The reversal of 224390 is 93422.

224390 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

224390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401 + ... + 780.

It is an arithmetic number, because the mean of its divisors is an integer number (26595).

2²²⁴³⁹⁰ is an apocalyptic number.

224390 is a deficient number, since it is larger than the sum of its proper divisors (201130).

224390 is a wasteful number, since it uses less digits than its factorization.

224390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 224390 is about 473.6982161672. The cubic root of 224390 is about 60.7670051239.

It can be divided in two parts, 22 and 4390, that multiplied together give a triangular number (96580 = T₄₃₉).

The spelling of 224390 in words is "two hundred twenty-four thousand, three hundred ninety".