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12803801 = 23556687
BaseRepresentation
bin110000110101…
…111011011001
3220002111111212
4300311323121
511234210201
61134232505
7213554603
oct60657331
926074455
1012803801
11725575a
124355735
132863b1a
1419b4173
1511cdabb
hexc35ed9

12803801 has 4 divisors (see below), whose sum is σ = 13360512. Its totient is φ = 12247092.

The previous prime is 12803797. The next prime is 12803803. The reversal of 12803801 is 10830821.

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.

It is a cyclic number.

It is not a de Polignac number, because 12803801 - 22 = 12803797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 556687 = 12803801 / (1 + 2 + 8 + 0 + 3 + 8 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12803803) 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, 278321 + ... + 278366.

It is an arithmetic number, because the mean of its divisors is an integer number (3340128).

Almost surely, 212803801 is an apocalyptic number.

It is an amenable number.

12803801 is a deficient number, since it is larger than the sum of its proper divisors (556711).

12803801 is an equidigital number, since it uses as much as digits as its factorization.

12803801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556710.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 12803801 is about 3578.2399304686. The cubic root of 12803801 is about 233.9445713309.

The spelling of 12803801 in words is "twelve million, eight hundred three thousand, eight hundred one".

Divisors: 1 23 556687 12803801