1572224 has 32 divisors (see below), whose sum is σ = 3194640. Its totient is φ = 770560.

The previous prime is 1572217. The next prime is 1572239. The reversal of 1572224 is 4222751.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1572224.

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, 9002 + ... + 9174.

2^1572224 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 1572224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597320).

1572224 is an abundant number, since it is smaller than the sum of its proper divisors (1622416).

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

1572224 is an equidigital number, since it uses as much as digits as its factorization.

1572224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 246 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 1572224 is about 1253.8835671624. The cubic root of 1572224 is about 116.2799421851.

Adding to 1572224 its reverse (4222751), we get a palindrome (5794975).

The spelling of 1572224 in words is "one million, five hundred seventy-two thousand, two hundred twenty-four".