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12823130 = 256719139
BaseRepresentation
bin110000111010…
…101001011010
3220010111000202
4300322221122
511240320010
61134502202
7213665135
oct60725132
926114022
1012823130
117269231
124364962
13286c868
1419bb21c
1511d46a5
hexc3aa5a

12823130 has 16 divisors (see below), whose sum is σ = 23427360. Its totient is φ = 5052432.

The previous prime is 12823123. The next prime is 12823141. The reversal of 12823130 is 3132821.

12823130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8900 + ... + 10239.

It is an arithmetic number, because the mean of its divisors is an integer number (1464210).

Almost surely, 212823130 is an apocalyptic number.

12823130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12823130 is a deficient number, since it is larger than the sum of its proper divisors (10604230).

12823130 is a wasteful number, since it uses less digits than its factorization.

12823130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19213.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12823130 is about 3580.9398207733. The cubic root of 12823130 is about 234.0622353760.

Adding to 12823130 its reverse (3132821), we get a palindrome (15955951).

The spelling of 12823130 in words is "twelve million, eight hundred twenty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 67 134 335 670 19139 38278 95695 191390 1282313 2564626 6411565 12823130