224004440 has 32 divisors (see below), whose sum is σ = 549830160. Its totient is φ = 81456000.

The previous prime is 224004413. The next prime is 224004457. The reversal of 224004440 is 44400422.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254111 + ... + 254990.

Almost surely, 2^224004440 is an apocalyptic number.

224004440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224004440 is an abundant number, since it is smaller than the sum of its proper divisors (325825720).

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

224004440 is a wasteful number, since it uses less digits than its factorization.

224004440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509123 (or 509119 counting only the distinct ones).

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

The square root of 224004440 is about 14966.7778763500. Note that the first 3 decimals coincide. The cubic root of 224004440 is about 607.3218069840.

Adding to 224004440 its reverse (44400422), we get a palindrome (268404862).

The spelling of 224004440 in words is "two hundred twenty-four million, four thousand, four hundred forty".