2729105 has 8 divisors (see below), whose sum is σ = 3320232. Its totient is φ = 2153088.

The previous prime is 2729101. The next prime is 2729107. The reversal of 2729105 is 5019272.

It is a Cunningham number, because it is equal to 1652²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 984064 + 1745041 = 992^2 + 1321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2729105 - 2² = 2729101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2729101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3374 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (415029).

2^2729105 is an apocalyptic number.

It is an amenable number.

2729105 is a deficient number, since it is larger than the sum of its proper divisors (591127).

2729105 is an equidigital number, since it uses as much as digits as its factorization.

2729105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2729105 is about 1652.0003026634. Note that the first 3 decimals coincide. The cubic root of 2729105 is about 139.7462239351.

The spelling of 2729105 in words is "two million, seven hundred twenty-nine thousand, one hundred five".