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12679290 = 23251310837
BaseRepresentation
bin110000010111…
…100001111010
3212212011201100
4300113201322
511221214130
61131432230
7212525601
oct60274172
925764640
1012679290
117180158
1242b5676
13281c250
141980a38
1511a6c60
hexc1787a

12679290 has 48 divisors (see below), whose sum is σ = 35505288. Its totient is φ = 3120768.

The previous prime is 12679283. The next prime is 12679307. The reversal of 12679290 is 9297621.

12679290 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6007401 + 6671889 = 2451^2 + 2583^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4249 + ... + 6588.

Almost surely, 212679290 is an apocalyptic number.

12679290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12679290 is an abundant number, since it is smaller than the sum of its proper divisors (22825998).

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

12679290 is a wasteful number, since it uses less digits than its factorization.

12679290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10863 (or 10860 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 12679290 is about 3560.7990676251. The cubic root of 12679290 is about 233.1837658252.

The spelling of 12679290 in words is "twelve million, six hundred seventy-nine thousand, two hundred ninety".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 390 585 1170 10837 21674 32511 54185 65022 97533 108370 140881 162555 195066 281762 325110 422643 487665 704405 845286 975330 1267929 1408810 2113215 2535858 4226430 6339645 12679290