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12790026 = 232710557
BaseRepresentation
bin110000110010…
…100100001010
3220001210121200
4300302210022
511233240101
61134045030
7213466464
oct60624412
926053550
1012790026
117246377
124349776
13285a782
1419ad134
1511c9986
hexc3290a

12790026 has 12 divisors (see below), whose sum is σ = 27711762. Its totient is φ = 4263336.

The previous prime is 12790009. The next prime is 12790027. The reversal of 12790026 is 62009721.

It can be written as a sum of positive squares in only one way, i.e., 9603801 + 3186225 = 3099^2 + 1785^2 .

It is not an unprimeable number, because it can be changed into a prime (12790027) 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, 355261 + ... + 355296.

Almost surely, 212790026 is an apocalyptic number.

12790026 is an abundant number, since it is smaller than the sum of its proper divisors (14921736).

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

12790026 is a wasteful number, since it uses less digits than its factorization.

12790026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710565 (or 710562 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12790026 is about 3576.3145834784. The cubic root of 12790026 is about 233.8606446168.

Adding to 12790026 its reverse (62009721), we get a palindrome (74799747).

The spelling of 12790026 in words is "twelve million, seven hundred ninety thousand, twenty-six".

Divisors: 1 2 3 6 9 18 710557 1421114 2131671 4263342 6395013 12790026