2840485 has 4 divisors (see below), whose sum is σ = 3408588. Its totient is φ = 2272384.

The previous prime is 2840483. The next prime is 2840507. The reversal of 2840485 is 5840482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2067844 + 772641 = 1438^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840485 - 2¹ = 2840483 is a prime.

It is a Duffinian number.

2840485 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840483) 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 3 ways as a sum of consecutive naturals, for example, 284044 + ... + 284053.

It is an arithmetic number, because the mean of its divisors is an integer number (852147).

2^2840485 is an apocalyptic number.

It is an amenable number.

2840485 is a deficient number, since it is larger than the sum of its proper divisors (568103).

2840485 is an equidigital number, since it uses as much as digits as its factorization.

2840485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568102.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 2840485 is about 1685.3738457684. The cubic root of 2840485 is about 141.6220359218.

The spelling of 2840485 in words is "two million, eight hundred forty thousand, four hundred eighty-five".