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12882880 = 265127317
BaseRepresentation
bin110001001001…
…001111000000
3220020111222201
4301021033000
511244223010
61140042544
7214334263
oct61111700
926214881
1012882880
1172aa10a
124393454
132890b0a
1419d4cda
1511e723a
hexc493c0

12882880 has 56 divisors (see below), whose sum is σ = 31016448. Its totient is φ = 5096448.

The previous prime is 12882847. The next prime is 12882901. The reversal of 12882880 is 8828821.

It is a congruent 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, 40482 + ... + 40798.

Almost surely, 212882880 is an apocalyptic number.

12882880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12882880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15508224).

12882880 is an abundant number, since it is smaller than the sum of its proper divisors (18133568).

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

12882880 is a wasteful number, since it uses less digits than its factorization.

12882880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 37.

The square root of 12882880 is about 3589.2729068713. The cubic root of 12882880 is about 234.4252136560.

The spelling of 12882880 in words is "twelve million, eight hundred eighty-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 127 160 254 317 320 508 634 635 1016 1268 1270 1585 2032 2536 2540 3170 4064 5072 5080 6340 8128 10144 10160 12680 20288 20320 25360 40259 40640 50720 80518 101440 161036 201295 322072 402590 644144 805180 1288288 1610360 2576576 3220720 6441440 12882880