2644452 has 72 divisors (see below), whose sum is σ = 7371000. Its totient is φ = 795648.

The previous prime is 2644451. The next prime is 2644489. The reversal of 2644452 is 2544462.

It can be written as a sum of positive squares in 4 ways, for example, as 285156 + 2359296 = 534^2 + 1536^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2644451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17674 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (102375).

2^2644452 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 2644452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3685500).

2644452 is an abundant number, since it is smaller than the sum of its proper divisors (4726548).

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

2644452 is a wasteful number, since it uses less digits than its factorization.

2644452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 200 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 2644452 is about 1626.1771121252. The cubic root of 2644452 is about 138.2861108796.

The spelling of 2644452 in words is "two million, six hundred forty-four thousand, four hundred fifty-two".