224020440 has 96 divisors (see below), whose sum is σ = 832085280. Its totient is φ = 51204096.

The previous prime is 224020427. The next prime is 224020481. The reversal of 224020440 is 44020422.

224020440 is a `hidden beast` number, since 224 + 0 + 2 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41929 + ... + 46968.

It is an arithmetic number, because the mean of its divisors is an integer number (8667555).

Almost surely, 2^224020440 is an apocalyptic number.

224020440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224020440 is an abundant number, since it is smaller than the sum of its proper divisors (608064840).

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

224020440 is a wasteful number, since it uses less digits than its factorization.

224020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88921 (or 88914 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 224020440 is about 14967.3123839920. The cubic root of 224020440 is about 607.3362663962.

Subtracting from 224020440 its sum of digits (18), we obtain a palindrome (224020422).

Adding to 224020440 its reverse (44020422), we get a palindrome (268040862).

The spelling of 224020440 in words is "two hundred twenty-four million, twenty thousand, four hundred forty".