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12628791 = 34722273
BaseRepresentation
bin110000001011…
…001100110111
3212202121110000
4300023030313
511213110131
61130402343
7212225430
oct60131467
925677400
1012628791
11714621a
1242903b3
132802276
14196a487
151196ce6
hexc0b337

12628791 has 20 divisors (see below), whose sum is σ = 21561232. Its totient is φ = 7216128.

The previous prime is 12628783. The next prime is 12628801. The reversal of 12628791 is 19782621.

12628791 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12628791 - 23 = 12628783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12628741) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10570 + ... + 11703.

Almost surely, 212628791 is an apocalyptic number.

12628791 is a deficient number, since it is larger than the sum of its proper divisors (8932441).

12628791 is an equidigital number, since it uses as much as digits as its factorization.

12628791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22292 (or 22283 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12628791 is about 3553.7010285054. The cubic root of 12628791 is about 232.8737796228.

The spelling of 12628791 in words is "twelve million, six hundred twenty-eight thousand, seven hundred ninety-one".

Divisors: 1 3 7 9 21 27 63 81 189 567 22273 66819 155911 200457 467733 601371 1403199 1804113 4209597 12628791