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12779434 = 26389717
BaseRepresentation
bin110000101111…
…111110101010
3220001021002101
4300233332222
511232420214
61133524014
7213423553
oct60577652
926037071
1012779434
117239418
12434360a
1328559c5
1419a932a
1511c6774
hexc2ffaa

12779434 has 4 divisors (see below), whose sum is σ = 19169154. Its totient is φ = 6389716.

The previous prime is 12779411. The next prime is 12779449. The reversal of 12779434 is 43497721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11580409 + 1199025 = 3403^2 + 1095^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12779393 and 12779402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194857 + ... + 3194860.

Almost surely, 212779434 is an apocalyptic number.

12779434 is a deficient number, since it is larger than the sum of its proper divisors (6389720).

12779434 is an equidigital number, since it uses as much as digits as its factorization.

12779434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6389719.

The product of its digits is 42336, while the sum is 37.

The square root of 12779434 is about 3574.8334226926. The cubic root of 12779434 is about 233.7960699228.

The spelling of 12779434 in words is "twelve million, seven hundred seventy-nine thousand, four hundred thirty-four".

Divisors: 1 2 6389717 12779434