Search a number
BaseRepresentation
bin1011011100011011110001
312122102021221
423130123301
51232000144
6144145041
734333333
oct13343361
95572257
103000049
111769a88
121008181
138106a0
14581453
153e3d84
hex2dc6f1

3000049 has 4 divisors (see below), whose sum is σ = 3230836. Its totient is φ = 2769264.

The previous prime is 3000047. The next prime is 3000061. The reversal of 3000049 is 9400003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9400003 = 19494737.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 2537649 = 680^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 3000049 - 21 = 3000047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2999996 and 3000041.

It is not an unprimeable number, because it can be changed into a prime (3000047) 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, 115374 + ... + 115399.

It is an arithmetic number, because the mean of its divisors is an integer number (807709).

Almost surely, 23000049 is an apocalyptic number.

It is an amenable number.

3000049 is a deficient number, since it is larger than the sum of its proper divisors (230787).

3000049 is a wasteful number, since it uses less digits than its factorization.

3000049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230786.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3000049 is about 1732.0649525927. The cubic root of 3000049 is about 144.2257422512.

The spelling of 3000049 in words is "three million, forty-nine", and thus it is an aban number and an uban number.

Divisors: 1 13 230773 3000049