2809235 has 16 divisors (see below), whose sum is σ = 3961440. Its totient is φ = 1885440.

The previous prime is 2809223. The next prime is 2809241. The reversal of 2809235 is 5329082.

It is not a de Polignac number, because 2809235 - 2²⁰ = 1760659 is a prime.

It is a d-powerful number, because it can be written as 2⁸ + 8⁶ + 0 + 9 + 2²¹ + 3¹⁰ + 5⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 2809198 and 2809207.

It is an unprimeable number.

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, 1250 + ... + 2679.

It is an arithmetic number, because the mean of its divisors is an integer number (247590).

2^2809235 is an apocalyptic number.

2809235 is a deficient number, since it is larger than the sum of its proper divisors (1152205).

2809235 is a wasteful number, since it uses less digits than its factorization.

2809235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2809235 is about 1676.0772655221. The cubic root of 2809235 is about 141.1007612684.

The spelling of 2809235 in words is "two million, eight hundred nine thousand, two hundred thirty-five".