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12803215 = 512132111
BaseRepresentation
bin110000110101…
…110010001111
3220002110201011
4300311302033
511234200330
61134230051
7213553105
oct60656217
926073634
1012803215
117255277
124355327
132863789
1419b3c75
1511cd82a
hexc35c8f

12803215 has 8 divisors (see below), whose sum is σ = 15383808. Its totient is φ = 10229280.

The previous prime is 12803213. The next prime is 12803237. The reversal of 12803215 is 51230821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12803215 - 21 = 12803213 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 (12803213) 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 7 ways as a sum of consecutive naturals, for example, 5010 + ... + 7120.

It is an arithmetic number, because the mean of its divisors is an integer number (1922976).

Almost surely, 212803215 is an apocalyptic number.

12803215 is a deficient number, since it is larger than the sum of its proper divisors (2580593).

12803215 is a wasteful number, since it uses less digits than its factorization.

12803215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12803215 is about 3578.1580456989. The cubic root of 12803215 is about 233.9410022447.

The spelling of 12803215 in words is "twelve million, eight hundred three thousand, two hundred fifteen".

Divisors: 1 5 1213 2111 6065 10555 2560643 12803215