2729641 has 4 divisors (see below), whose sum is σ = 2737152. Its totient is φ = 2722132.

The previous prime is 2729633. The next prime is 2729651. The reversal of 2729641 is 1469272.

2729641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2729641 - 2³ = 2729633 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2¹⁹ + 7³ + 2¹⁹ + 9² + 6⁸ + 4⁵ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2729651) 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 3 ways as a sum of consecutive naturals, for example, 3181 + ... + 3946.

It is an arithmetic number, because the mean of its divisors is an integer number (684288).

2^2729641 is an apocalyptic number.

It is an amenable number.

2729641 is a deficient number, since it is larger than the sum of its proper divisors (7511).

2729641 is an equidigital number, since it uses as much as digits as its factorization.

2729641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510.

The product of its digits is 6048, while the sum is 31.

The square root of 2729641 is about 1652.1625222719. The cubic root of 2729641 is about 139.7553721201.

The spelling of 2729641 in words is "two million, seven hundred twenty-nine thousand, six hundred forty-one".