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12802387 = 131675897
BaseRepresentation
bin110000110101…
…100101010011
3220002102120111
4300311211103
511234134022
61134222151
7213550513
oct60654523
926072514
1012802387
117254694
124354957
1328632a0
1419b3843
1511cd477
hexc35953

12802387 has 8 divisors (see below), whose sum is σ = 13872096. Its totient is φ = 11744832.

The previous prime is 12802357. The next prime is 12802397. The reversal of 12802387 is 78320821.

12802387 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12802387 - 215 = 12769619 is a prime.

It is a super-2 number, since 2×128023872 = 327802225795538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12802357) 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, 778 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (1734012).

Almost surely, 212802387 is an apocalyptic number.

12802387 is a deficient number, since it is larger than the sum of its proper divisors (1069709).

12802387 is a wasteful number, since it uses less digits than its factorization.

12802387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12802387 is about 3578.0423418400. The cubic root of 12802387 is about 233.9359590498.

The spelling of 12802387 in words is "twelve million, eight hundred two thousand, three hundred eighty-seven".

Divisors: 1 13 167 2171 5897 76661 984799 12802387