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12791946 = 232131991
BaseRepresentation
bin110000110011…
…000010001010
3220001220020210
4300303002022
511233320241
61134101550
7213505206
oct60630212
926056223
1012791946
117247862
12434a8b6
13285b5cb
1419adb06
1511ca316
hexc3308a

12791946 has 8 divisors (see below), whose sum is σ = 25583904. Its totient is φ = 4263980.

The previous prime is 12791893. The next prime is 12791951. The reversal of 12791946 is 64919721.

It is a sphenic number, since it is the product of 3 distinct primes.

12791946 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065990 + ... + 1066001.

It is an arithmetic number, because the mean of its divisors is an integer number (3197988).

Almost surely, 212791946 is an apocalyptic number.

12791946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12791946 is a wasteful number, since it uses less digits than its factorization.

12791946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131996.

The product of its digits is 27216, while the sum is 39.

The square root of 12791946 is about 3576.5830061666. The cubic root of 12791946 is about 233.8723461821.

It can be divided in two parts, 1279194 and 6, that added together give a triangular number (1279200 = T1599).

The spelling of 12791946 in words is "twelve million, seven hundred ninety-one thousand, nine hundred forty-six".

Divisors: 1 2 3 6 2131991 4263982 6395973 12791946