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3000071 = 3781083
BaseRepresentation
bin1011011100011100000111
312122102022202
423130130013
51232000241
6144145115
734333364
oct13343407
95572282
103000071
111769aa8
12100819b
138106b9
1458146b
153e3d9b
hex2dc707

3000071 has 4 divisors (see below), whose sum is σ = 3081192. Its totient is φ = 2918952.

The previous prime is 3000061. The next prime is 3000073. The reversal of 3000071 is 1700003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1700003 = 2277489.

It is a cyclic number.

It is not a de Polignac number, because 3000071 - 210 = 2999047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40505 + ... + 40578.

It is an arithmetic number, because the mean of its divisors is an integer number (770298).

Almost surely, 23000071 is an apocalyptic number.

3000071 is a deficient number, since it is larger than the sum of its proper divisors (81121).

3000071 is an equidigital number, since it uses as much as digits as its factorization.

3000071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81120.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 3000071 is about 1732.0713033822. The cubic root of 3000071 is about 144.2260947964.

Adding to 3000071 its reverse (1700003), we get a palindrome (4700074).

The spelling of 3000071 in words is "three million, seventy-one", and thus it is an aban number and an uban number.

Divisors: 1 37 81083 3000071