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1308012 = 223109001
BaseRepresentation
bin100111111010101101100
32110110020220
410333111230
5313324022
644011340
714055306
oct4772554
92413226
101308012
11813802
12530b50
1336a494
14260976
151ac85c
hex13f56c

1308012 has 12 divisors (see below), whose sum is σ = 3052056. Its totient is φ = 436000.

The previous prime is 1308011. The next prime is 1308019. The reversal of 1308012 is 2108031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1307982 and 1308000.

It is not an unprimeable number, because it can be changed into a prime (1308011) 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 3 ways as a sum of consecutive naturals, for example, 54489 + ... + 54512.

It is an arithmetic number, because the mean of its divisors is an integer number (254338).

21308012 is an apocalyptic number.

1308012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1308012 is an abundant number, since it is smaller than the sum of its proper divisors (1744044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1308012 is a wasteful number, since it uses less digits than its factorization.

1308012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109008 (or 109006 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1308012 is about 1143.6835226583. The cubic root of 1308012 is about 109.3630405427.

The spelling of 1308012 in words is "one million, three hundred eight thousand, twelve".

Divisors: 1 2 3 4 6 12 109001 218002 327003 436004 654006 1308012