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12790980 = 2233523687
BaseRepresentation
bin110000110010…
…110011000100
3220001211221000
4300302303010
511233302410
61134053300
7213502326
oct60626304
926054830
1012790980
117247064
12434a230
13285b037
1419ad616
1511c9dc0
hexc32cc4

12790980 has 48 divisors (see below), whose sum is σ = 39795840. Its totient is φ = 3410784.

The previous prime is 12790963. The next prime is 12790993. The reversal of 12790980 is 8909721.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11304 + ... + 12383.

It is an arithmetic number, because the mean of its divisors is an integer number (829080).

Almost surely, 212790980 is an apocalyptic number.

12790980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12790980 is an abundant number, since it is smaller than the sum of its proper divisors (27004860).

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

12790980 is a wasteful number, since it uses less digits than its factorization.

12790980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23705 (or 23697 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 12790980 is about 3576.4479585197. The cubic root of 12790980 is about 233.8664589784.

The spelling of 12790980 in words is "twelve million, seven hundred ninety thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 23687 47374 71061 94748 118435 142122 213183 236870 284244 355305 426366 473740 639549 710610 852732 1065915 1279098 1421220 2131830 2558196 3197745 4263660 6395490 12790980