2528224 has 36 divisors (see below), whose sum is σ = 5210352. Its totient is φ = 1207040.

The previous prime is 2528221. The next prime is 2528231. The reversal of 2528224 is 4228252.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53769 + ... + 53815.

It is an arithmetic number, because the mean of its divisors is an integer number (144732).

2^2528224 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 2528224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2605176).

2528224 is an abundant number, since it is smaller than the sum of its proper divisors (2682128).

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

2528224 is an equidigital number, since it uses as much as digits as its factorization.

2528224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 90 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 2528224 is about 1590.0389932326. The cubic root of 2528224 is about 136.2297155786.

It can be divided in two parts, 25 and 28224, that multiplied together give a square (705600 = 840²).

The spelling of 2528224 in words is "two million, five hundred twenty-eight thousand, two hundred twenty-four".