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12830538 = 237305489
BaseRepresentation
bin110000111100…
…011101001010
3220010212012010
4300330131022
511241034123
61135000350
7214025550
oct60743512
926125163
1012830538
117273856
1243690b6
132873046
1419bdbd0
1511d6993
hexc3c74a

12830538 has 16 divisors (see below), whose sum is σ = 29327040. Its totient is φ = 3665856.

The previous prime is 12830537. The next prime is 12830551. The reversal of 12830538 is 83503821.

It is a happy number.

12830538 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

12830538 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12830537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152703 + ... + 152786.

It is an arithmetic number, because the mean of its divisors is an integer number (1832940).

Almost surely, 212830538 is an apocalyptic number.

12830538 is an abundant number, since it is smaller than the sum of its proper divisors (16496502).

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

12830538 is a wasteful number, since it uses less digits than its factorization.

12830538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305501.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12830538 is about 3581.9740367568. The cubic root of 12830538 is about 234.1072997569.

The spelling of 12830538 in words is "twelve million, eight hundred thirty thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 7 14 21 42 305489 610978 916467 1832934 2138423 4276846 6415269 12830538