4000224 has 24 divisors (see below), whose sum is σ = 10500840. Its totient is φ = 1333376.

The previous prime is 4000189. The next prime is 4000237. The reversal of 4000224 is 4220004.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20739 + ... + 20930.

It is an arithmetic number, because the mean of its divisors is an integer number (437535).

Almost surely, 2^4000224 is an apocalyptic number.

It is an amenable number.

4000224 is an abundant number, since it is smaller than the sum of its proper divisors (6500616).

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

4000224 is a wasteful number, since it uses less digits than its factorization.

4000224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41682 (or 41674 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4000224 is about 2000.0559992160. The cubic root of 4000224 is about 158.7430682901.

Adding to 4000224 its reverse (4220004), we get a palindrome (8220228).

It can be divided in two parts, 4000 and 224, that added together give a palindrome (4224).

The spelling of 4000224 in words is "four million, two hundred twenty-four", and thus it is an aban number.