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12808502 = 272130699
BaseRepresentation
bin110000110111…
…000100110110
3220002201221222
4300313010312
511234333002
61134310342
7213604400
oct60670466
926081858
1012808502
117259243
1243583b2
132865cc5
1419b5b70
1511d01a2
hexc37136

12808502 has 12 divisors (see below), whose sum is σ = 22349700. Its totient is φ = 5489316.

The previous prime is 12808501. The next prime is 12808511. The reversal of 12808502 is 20580821.

12808502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65252 + ... + 65447.

It is an arithmetic number, because the mean of its divisors is an integer number (1862475).

Almost surely, 212808502 is an apocalyptic number.

12808502 is a deficient number, since it is larger than the sum of its proper divisors (9541198).

12808502 is a wasteful number, since it uses less digits than its factorization.

12808502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130715 (or 130708 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 12808502 is about 3578.8967573821. The cubic root of 12808502 is about 233.9731992584.

The spelling of 12808502 in words is "twelve million, eight hundred eight thousand, five hundred two".

Divisors: 1 2 7 14 49 98 130699 261398 914893 1829786 6404251 12808502