2730785 has 16 divisors (see below), whose sum is σ = 3488400. Its totient is φ = 2048256.

The previous prime is 2730781. The next prime is 2730797. The reversal of 2730785 is 5870372.

2730785 = 1168² + 1169².

It can be written as a sum of positive squares in 8 ways, for example, as 300304 + 2430481 = 548^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2730785 - 2² = 2730781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2730781) 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, 5111 + ... + 5619.

It is an arithmetic number, because the mean of its divisors is an integer number (218025).

2^2730785 is an apocalyptic number.

2730785 is the 1169-th centered square number.

It is an amenable number.

2730785 is a deficient number, since it is larger than the sum of its proper divisors (757615).

2730785 is a wasteful number, since it uses less digits than its factorization.

2730785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2730785 is about 1652.5086989181. The cubic root of 2730785 is about 139.7748933460.

The spelling of 2730785 in words is "two million, seven hundred thirty thousand, seven hundred eighty-five".