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13157045 = 5111391721
BaseRepresentation
bin110010001100…
…001010110101
3220202110001222
4302030022311
511332011140
61150000125
7216555506
oct62141265
926673058
1013157045
1174770a0
1244a6045
132958845
141a66bad
15124d5b5
hexc8c2b5

13157045 has 16 divisors (see below), whose sum is σ = 17357760. Its totient is φ = 9494400.

The previous prime is 13157033. The next prime is 13157087. The reversal of 13157045 is 54075131.

It is not a de Polignac number, because 13157045 - 210 = 13156021 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6785 + ... + 8505.

It is an arithmetic number, because the mean of its divisors is an integer number (1084860).

Almost surely, 213157045 is an apocalyptic number.

It is an amenable number.

13157045 is a deficient number, since it is larger than the sum of its proper divisors (4200715).

13157045 is a wasteful number, since it uses less digits than its factorization.

13157045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 13157045 is about 3627.2641205184. The cubic root of 13157045 is about 236.0765156951.

The spelling of 13157045 in words is "thirteen million, one hundred fifty-seven thousand, forty-five".

Divisors: 1 5 11 55 139 695 1529 1721 7645 8605 18931 94655 239219 1196095 2631409 13157045