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12808077 = 312733617
BaseRepresentation
bin110000110110…
…111110001101
3220002201101020
4300312332031
511234324302
61134304353
7213603222
oct60667615
926081336
1012808077
117258997
1243580b9
132865a59
1419b5949
1511ceebc
hexc36f8d

12808077 has 8 divisors (see below), whose sum is σ = 17212416. Its totient is φ = 8471232.

The previous prime is 12808063. The next prime is 12808091. The reversal of 12808077 is 77080821.

It is an interprime number because it is at equal distance from previous prime (12808063) and next prime (12808091).

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

It is not a de Polignac number, because 12808077 - 215 = 12775309 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16428 + ... + 17189.

It is an arithmetic number, because the mean of its divisors is an integer number (2151552).

Almost surely, 212808077 is an apocalyptic number.

It is an amenable number.

12808077 is a deficient number, since it is larger than the sum of its proper divisors (4404339).

12808077 is a wasteful number, since it uses less digits than its factorization.

12808077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33747.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 12808077 is about 3578.8373810499. The cubic root of 12808077 is about 233.9706114016.

Adding to 12808077 its reverse (77080821), we get a palindrome (89888898).

The spelling of 12808077 in words is "twelve million, eight hundred eight thousand, seventy-seven".

Divisors: 1 3 127 381 33617 100851 4269359 12808077