2840047 has 8 divisors (see below), whose sum is σ = 3256736. Its totient is φ = 2426112.

The previous prime is 2840041. The next prime is 2840059. The reversal of 2840047 is 7400482.

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 2840047 - 2³ = 2840039 is a prime.

It is an Ulam number.

2840047 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840041) 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, 2563 + ... + 3499.

It is an arithmetic number, because the mean of its divisors is an integer number (407092).

2^2840047 is an apocalyptic number.

2840047 is a deficient number, since it is larger than the sum of its proper divisors (416689).

2840047 is an equidigital number, since it uses as much as digits as its factorization.

2840047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2840047 is about 1685.2438992621. The cubic root of 2840047 is about 141.6147562212.

The spelling of 2840047 in words is "two million, eight hundred forty thousand, forty-seven".