224444840 has 16 divisors (see below), whose sum is σ = 505000980. Its totient is φ = 89777920.

The previous prime is 224444839. The next prime is 224444861. The reversal of 224444840 is 48444422.

It can be written as a sum of positive squares in 2 ways, for example, as 222188836 + 2256004 = 14906^2 + 1502^2 .

It is a junction number, because it is equal to n+sod(n) for n = 224444797 and 224444806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2805521 + ... + 2805600.

Almost surely, 2^224444840 is an apocalyptic number.

224444840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224444840 is an abundant number, since it is smaller than the sum of its proper divisors (280556140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

224444840 is a wasteful number, since it uses less digits than its factorization.

224444840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611132 (or 5611128 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

The square root of 224444840 is about 14981.4832376504. The cubic root of 224444840 is about 607.7195512336.

The spelling of 224444840 in words is "two hundred twenty-four million, four hundred forty-four thousand, eight hundred forty".