2725236 has 72 divisors (see below), whose sum is σ = 7515144. Its totient is φ = 829440.

The previous prime is 2725231. The next prime is 2725237. The reversal of 2725236 is 6325272.

2725236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 197136 + 2528100 = 444^2 + 1590^2 .

It is a super-2 number, since 2×2725236² = 14853822511392, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37296 + ... + 37368.

It is an arithmetic number, because the mean of its divisors is an integer number (104377).

2^2725236 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 2725236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3757572).

2725236 is an abundant number, since it is smaller than the sum of its proper divisors (4789908).

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

2725236 is a wasteful number, since it uses less digits than its factorization.

2725236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 156 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 2725236 is about 1650.8288827132. The cubic root of 2725236 is about 139.6801541863.

The spelling of 2725236 in words is "two million, seven hundred twenty-five thousand, two hundred thirty-six".