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12972673 = 71853239
BaseRepresentation
bin110001011111…
…001010000001
3220102002011101
4301133022001
511310111143
61142014401
7215160130
oct61371201
926362141
1012972673
11736061a
124417401
1328c294c
141a19917
151213b4d
hexc5f281

12972673 has 4 divisors (see below), whose sum is σ = 14825920. Its totient is φ = 11119428.

The previous prime is 12972671. The next prime is 12972689. The reversal of 12972673 is 37627921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12972673 - 21 = 12972671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12972671) 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 3 ways as a sum of consecutive naturals, for example, 926613 + ... + 926626.

It is an arithmetic number, because the mean of its divisors is an integer number (3706480).

Almost surely, 212972673 is an apocalyptic number.

It is an amenable number.

12972673 is a deficient number, since it is larger than the sum of its proper divisors (1853247).

12972673 is an equidigital number, since it uses as much as digits as its factorization.

12972673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853246.

The product of its digits is 31752, while the sum is 37.

The square root of 12972673 is about 3601.7597088090. The cubic root of 12972673 is about 234.9685969808.

The spelling of 12972673 in words is "twelve million, nine hundred seventy-two thousand, six hundred seventy-three".

Divisors: 1 7 1853239 12972673