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12884190 = 2351139043
BaseRepresentation
bin110001001001…
…100011011110
3220020120210020
4301021203132
511244243230
61140053010
7214341144
oct61114336
926216706
1012884190
1173000a0
124394166
1328915a7
1419d5594
1511e7810
hexc498de

12884190 has 32 divisors (see below), whose sum is σ = 33734016. Its totient is φ = 3123360.

The previous prime is 12884171. The next prime is 12884197. The reversal of 12884190 is 9148821.

12884190 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×128841902 = 332004703912200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12884197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19192 + ... + 19851.

It is an arithmetic number, because the mean of its divisors is an integer number (1054188).

Almost surely, 212884190 is an apocalyptic number.

12884190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12884190 is an abundant number, since it is smaller than the sum of its proper divisors (20849826).

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

12884190 is a wasteful number, since it uses less digits than its factorization.

12884190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39064.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 12884190 is about 3589.4553904457. The cubic root of 12884190 is about 234.4331592557.

The spelling of 12884190 in words is "twelve million, eight hundred eighty-four thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 39043 78086 117129 195215 234258 390430 429473 585645 858946 1171290 1288419 2147365 2576838 4294730 6442095 12884190