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12893830 = 253141593
BaseRepresentation
bin110001001011…
…111010000110
3220021002000021
4301023322012
511300100310
61140205354
7214411225
oct61137206
926232007
1012893830
117307364
12439985a
132895ab1
1419d8cbc
1511ea5da
hexc4be86

12893830 has 16 divisors (see below), whose sum is σ = 23958144. Its totient is φ = 4991040.

The previous prime is 12893819. The next prime is 12893831. The reversal of 12893830 is 3839821.

12893830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12893831) 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, 20487 + ... + 21106.

It is an arithmetic number, because the mean of its divisors is an integer number (1497384).

Almost surely, 212893830 is an apocalyptic number.

12893830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12893830 is a deficient number, since it is larger than the sum of its proper divisors (11064314).

12893830 is a wasteful number, since it uses less digits than its factorization.

12893830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41631.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 12893830 is about 3590.7979614565. The cubic root of 12893830 is about 234.4916126071.

The spelling of 12893830 in words is "twelve million, eight hundred ninety-three thousand, eight hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 41593 83186 207965 415930 1289383 2578766 6446915 12893830