224404040 has 128 divisors (see below), whose sum is σ = 603832320. Its totient is φ = 73440000.

The previous prime is 224404039. The next prime is 224404049. The reversal of 224404040 is 40404422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (224404049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 893915 + ... + 894165.

It is an arithmetic number, because the mean of its divisors is an integer number (4717440).

Almost surely, 2^224404040 is an apocalyptic number.

224404040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224404040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301916160).

224404040 is an abundant number, since it is smaller than the sum of its proper divisors (379428280).

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

224404040 is a wasteful number, since it uses less digits than its factorization.

224404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 224404040 is about 14980.1214948344. The cubic root of 224404040 is about 607.6827248724.

Adding to 224404040 its reverse (40404422), we get a palindrome (264808462).

The spelling of 224404040 in words is "two hundred twenty-four million, four hundred four thousand, forty".