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13985793 = 324371509
BaseRepresentation
bin110101010110…
…100000000001
3222022112220100
4311112200001
512040021133
61215433013
7226606623
oct65264001
928275810
1013985793
117992808
124825769
132b88b23
141c00c13
151363e13
hexd56801

13985793 has 24 divisors (see below), whose sum is σ = 21003840. Its totient is φ = 8961120.

The previous prime is 13985761. The next prime is 13985813. The reversal of 13985793 is 39758931.

It is a happy number.

It is not a de Polignac number, because 13985793 - 25 = 13985761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13985093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27223 + ... + 27731.

It is an arithmetic number, because the mean of its divisors is an integer number (875160).

Almost surely, 213985793 is an apocalyptic number.

It is an amenable number.

13985793 is a deficient number, since it is larger than the sum of its proper divisors (7018047).

13985793 is a wasteful number, since it uses less digits than its factorization.

13985793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 626 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 13985793 is about 3739.7584146573. The cubic root of 13985793 is about 240.9326728935.

The spelling of 13985793 in words is "thirteen million, nine hundred eighty-five thousand, seven hundred ninety-three".

Divisors: 1 3 9 43 71 129 213 387 509 639 1527 3053 4581 9159 21887 27477 36139 65661 108417 196983 325251 1553977 4661931 13985793