2734809 has 16 divisors (see below), whose sum is σ = 4546560. Its totient is φ = 1420560.

The previous prime is 2734801. The next prime is 2734817. The reversal of 2734809 is 9084372.

It is an interprime number because it is at equal distance from previous prime (2734801) and next prime (2734817).

It is not a de Polignac number, because 2734809 - 2³ = 2734801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

2734809 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2734809.

It is not an unprimeable number, because it can be changed into a prime (2734801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5689 + ... + 6150.

It is an arithmetic number, because the mean of its divisors is an integer number (284160).

2^2734809 is an apocalyptic number.

It is an amenable number.

2734809 is a deficient number, since it is larger than the sum of its proper divisors (1811751).

2734809 is a wasteful number, since it uses less digits than its factorization.

2734809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11860.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2734809 is about 1653.7257934736. The cubic root of 2734809 is about 139.8435156317.

The spelling of 2734809 in words is "two million, seven hundred thirty-four thousand, eight hundred nine".