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12012993 = 3210312959
BaseRepresentation
bin101101110100…
…110111000001
3211121022201200
4231310313001
511033403433
61105251413
7204052206
oct55646701
924538650
1012012993
1168655a3
124033b69
132647ba5
141849cad
1510c4613
hexb74dc1

12012993 has 12 divisors (see below), whose sum is σ = 17521920. Its totient is φ = 7930296.

The previous prime is 12012971. The next prime is 12013009. The reversal of 12012993 is 39921021.

It is not a de Polignac number, because 12012993 - 210 = 12011969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012493) 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 11 ways as a sum of consecutive naturals, for example, 5553 + ... + 7406.

It is an arithmetic number, because the mean of its divisors is an integer number (1460160).

Almost surely, 212012993 is an apocalyptic number.

It is an amenable number.

12012993 is a deficient number, since it is larger than the sum of its proper divisors (5508927).

12012993 is a wasteful number, since it uses less digits than its factorization.

12012993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13068 (or 13065 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 12012993 is about 3465.9764857829. The cubic root of 12012993 is about 229.0254479960.

The spelling of 12012993 in words is "twelve million, twelve thousand, nine hundred ninety-three".

Divisors: 1 3 9 103 309 927 12959 38877 116631 1334777 4004331 12012993