2805147 has 6 divisors (see below), whose sum is σ = 4051892. Its totient is φ = 1870092.

The previous prime is 2805137. The next prime is 2805157. The reversal of 2805147 is 7415082.

It is an interprime number because it is at equal distance from previous prime (2805137) and next prime (2805157).

It is not a de Polignac number, because 2805147 - 2⁸ = 2804891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2805147.

It is not an unprimeable number, because it can be changed into a prime (2805107) 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 5 ways as a sum of consecutive naturals, for example, 155833 + ... + 155850.

2^2805147 is an apocalyptic number.

2805147 is a deficient number, since it is larger than the sum of its proper divisors (1246745).

2805147 is a wasteful number, since it uses less digits than its factorization.

2805147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311689 (or 311686 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2805147 is about 1674.8573073549. The cubic root of 2805147 is about 141.0322847454.

The spelling of 2805147 in words is "two million, eight hundred five thousand, one hundred forty-seven".