2740206 has 32 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 767520.

The previous prime is 2740189. The next prime is 2740207. The reversal of 2740206 is 6020472.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1611 + ... + 2841.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

2^2740206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2740206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193344).

2740206 is an abundant number, since it is smaller than the sum of its proper divisors (3646482).

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

2740206 is a wasteful number, since it uses less digits than its factorization.

2740206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2740206 is about 1655.3567591308. The cubic root of 2740206 is about 139.9354464296.

Adding to 2740206 its reverse (6020472), we get a palindrome (8760678).

The spelling of 2740206 in words is "two million, seven hundred forty thousand, two hundred six".