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3001813 = 12792347
BaseRepresentation
bin1011011100110111010101
312122111201021
423130313111
51232024223
6144201141
734341433
oct13346725
95574637
103001813
111770341
1210091b1
13811429
14581d53
153e465d
hex2dcdd5

3001813 has 4 divisors (see below), whose sum is σ = 3005440. Its totient is φ = 2998188.

The previous prime is 3001811. The next prime is 3001837. The reversal of 3001813 is 3181003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3001813 - 21 = 3001811 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 (3001811) 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, 106 + ... + 2452.

It is an arithmetic number, because the mean of its divisors is an integer number (751360).

Almost surely, 23001813 is an apocalyptic number.

It is an amenable number.

3001813 is a deficient number, since it is larger than the sum of its proper divisors (3627).

3001813 is a wasteful number, since it uses less digits than its factorization.

3001813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3001813 is about 1732.5740965396. The cubic root of 3001813 is about 144.2540044964.

Adding to 3001813 its reverse (3181003), we get a palindrome (6182816).

The spelling of 3001813 in words is "three million, one thousand, eight hundred thirteen".

Divisors: 1 1279 2347 3001813