1000224 has 72 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 316800.

The previous prime is 1000213. The next prime is 1000231. The reversal of 1000224 is 4220001.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6549 + ... + 6699.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2^1000224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1493856).

1000224 is an abundant number, since it is smaller than the sum of its proper divisors (1987488).

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

1000224 is a wasteful number, since it uses less digits than its factorization.

1000224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1000224 is about 1000.1119937287. Note that the first 3 decimals coincide. The cubic root of 1000224 is about 100.0074661092.

Adding to 1000224 its reverse (4220001), we get a palindrome (5220225).

The spelling of 1000224 in words is "one million, two hundred twenty-four", and thus it is an aban number.