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12800719 = 235310501
BaseRepresentation
bin110000110101…
…001011001111
3220002100021201
4300311023033
511234110334
61134210331
7213542611
oct60651317
926070251
1012800719
117253408
1243539a7
1328625b9
1419b2db1
1511ccc14
hexc352cf

12800719 has 8 divisors (see below), whose sum is σ = 13610592. Its totient is φ = 12012000.

The previous prime is 12800707. The next prime is 12800729. The reversal of 12800719 is 91700821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12800719 is a prime.

It is a super-2 number, since 2×128007192 = 327716813833922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800729) 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, 4032 + ... + 6469.

It is an arithmetic number, because the mean of its divisors is an integer number (1701324).

Almost surely, 212800719 is an apocalyptic number.

12800719 is a deficient number, since it is larger than the sum of its proper divisors (809873).

12800719 is a wasteful number, since it uses less digits than its factorization.

12800719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10577.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 12800719 is about 3577.8092458934. The cubic root of 12800719 is about 233.9257989099.

The spelling of 12800719 in words is "twelve million, eight hundred thousand, seven hundred nineteen".

Divisors: 1 23 53 1219 10501 241523 556553 12800719