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13100049 = 34161729
BaseRepresentation
bin110001111110…
…010000010001
3220122112220000
4301332100101
511323200144
61144440213
7216230364
oct61762021
926575800
1013100049
117438296
124479069
132938911
141a500db
15123b769
hexc7e411

13100049 has 10 divisors (see below), whose sum is σ = 19569330. Its totient is φ = 8733312.

The previous prime is 13100039. The next prime is 13100051. The reversal of 13100049 is 94000131.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 1587600 = 3393^2 + 1260^2 .

It is not a de Polignac number, because 13100049 - 27 = 13099921 is a prime.

It is a super-2 number, since 2×131000492 = 343222567604802, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13100039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 80784 + ... + 80945.

It is an arithmetic number, because the mean of its divisors is an integer number (1956933).

Almost surely, 213100049 is an apocalyptic number.

It is an amenable number.

13100049 is a deficient number, since it is larger than the sum of its proper divisors (6469281).

13100049 is an equidigital number, since it uses as much as digits as its factorization.

13100049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161741 (or 161732 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 13100049 is about 3619.3989832568. The cubic root of 13100049 is about 235.7351296798.

The spelling of 13100049 in words is "thirteen million, one hundred thousand, forty-nine".

Divisors: 1 3 9 27 81 161729 485187 1455561 4366683 13100049