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13149149 = 134992027
BaseRepresentation
bin110010001010…
…001111011101
3220202001020112
4302022033131
511331233044
61145455405
7216523466
oct62121735
926661215
1013149149
117471172
1244a1565
132955080
141a63d6d
15124b09e
hexc8a3dd

13149149 has 8 divisors (see below), whose sum is σ = 14196000. Its totient is φ = 12107376.

The previous prime is 13149139. The next prime is 13149163. The reversal of 13149149 is 94194131.

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 13149149 - 24 = 13149133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149119) 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, 5474 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (1774500).

Almost surely, 213149149 is an apocalyptic number.

It is an amenable number.

13149149 is a deficient number, since it is larger than the sum of its proper divisors (1046851).

13149149 is a wasteful number, since it uses less digits than its factorization.

13149149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539.

The product of its digits is 3888, while the sum is 32.

The square root of 13149149 is about 3626.1755335339. The cubic root of 13149149 is about 236.0292803372.

The spelling of 13149149 in words is "thirteen million, one hundred forty-nine thousand, one hundred forty-nine".

Divisors: 1 13 499 2027 6487 26351 1011473 13149149