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12707973 = 321411997
BaseRepresentation
bin110000011110…
…100010000101
3212220122001200
4300132202011
511223123343
61132213113
7213005325
oct60364205
925818050
1012707973
11719a763
12430a199
13282c315
14198b285
1511b04d3
hexc1e885

12707973 has 6 divisors (see below), whose sum is σ = 18355974. Its totient is φ = 8471976.

The previous prime is 12707971. The next prime is 12707999. The reversal of 12707973 is 37970721.

It can be written as a sum of positive squares in only one way, i.e., 12236004 + 471969 = 3498^2 + 687^2 .

It is not a de Polignac number, because 12707973 - 21 = 12707971 is a prime.

It is a super-2 number, since 2×127079732 = 322985155537458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12707971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 705990 + ... + 706007.

It is an arithmetic number, because the mean of its divisors is an integer number (3059329).

Almost surely, 212707973 is an apocalyptic number.

It is an amenable number.

12707973 is a deficient number, since it is larger than the sum of its proper divisors (5648001).

12707973 is a wasteful number, since it uses less digits than its factorization.

12707973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412003 (or 1412000 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 12707973 is about 3564.8243996023. The cubic root of 12707973 is about 233.3594689545.

The spelling of 12707973 in words is "twelve million, seven hundred seven thousand, nine hundred seventy-three".

Divisors: 1 3 9 1411997 4235991 12707973