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13985937 = 327221999
BaseRepresentation
bin110101010110…
…100010010001
3222022120002200
4311112202101
512040022222
61215433413
7226610220
oct65264221
928276080
1013985937
117992929
124825869
132b88c04
141c00cb7
151363eac
hexd56891

13985937 has 12 divisors (see below), whose sum is σ = 23088000. Its totient is φ = 7991928.

The previous prime is 13985927. The next prime is 13985941. The reversal of 13985937 is 73958931.

It is a happy number.

It is not a de Polignac number, because 13985937 - 210 = 13984913 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13985892 and 13985901.

It is not an unprimeable number, because it can be changed into a prime (13985927) 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 11 ways as a sum of consecutive naturals, for example, 110937 + ... + 111062.

It is an arithmetic number, because the mean of its divisors is an integer number (1924000).

Almost surely, 213985937 is an apocalyptic number.

It is an amenable number.

13985937 is a deficient number, since it is larger than the sum of its proper divisors (9102063).

13985937 is a wasteful number, since it uses less digits than its factorization.

13985937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222012 (or 222009 counting only the distinct ones).

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

The square root of 13985937 is about 3739.7776671883. Note that the first 3 decimals coincide. The cubic root of 13985937 is about 240.9334997847.

The spelling of 13985937 in words is "thirteen million, nine hundred eighty-five thousand, nine hundred thirty-seven".

Divisors: 1 3 7 9 21 63 221999 665997 1553993 1997991 4661979 13985937