224445405 has 32 divisors (see below), whose sum is σ = 363916800. Its totient is φ = 118115840.

The previous prime is 224445383. The next prime is 224445421. The reversal of 224445405 is 504544422.

It is not a de Polignac number, because 224445405 - 2⁶ = 224445341 is a prime.

It is a super-2 number, since 2×224445405² = 100751479651228050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520540 + ... + 520970.

It is an arithmetic number, because the mean of its divisors is an integer number (11372400).

Almost surely, 2^224445405 is an apocalyptic number.

It is an amenable number.

224445405 is a deficient number, since it is larger than the sum of its proper divisors (139471395).

224445405 is a wasteful number, since it uses less digits than its factorization.

224445405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 224445405 is about 14981.5020942494. The cubic root of 224445405 is about 607.7200611752.

Adding to 224445405 its reverse (504544422), we get a palindrome (728989827).

The spelling of 224445405 in words is "two hundred twenty-four million, four hundred forty-five thousand, four hundred five".