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12793984 = 277109131
BaseRepresentation
bin110000110011…
…100010000000
3220002000001021
4300303202000
511233401414
61134115224
7213514150
oct60634200
926060037
1012793984
117249345
12434bb14
13285c508
1419b0760
1511cac24
hexc33880

12793984 has 64 divisors (see below), whose sum is σ = 29620800. Its totient is φ = 5391360.

The previous prime is 12793981. The next prime is 12793993. The reversal of 12793984 is 48939721.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 12793984.

It is not an unprimeable number, because it can be changed into a prime (12793981) 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, 97599 + ... + 97729.

It is an arithmetic number, because the mean of its divisors is an integer number (462825).

Almost surely, 212793984 is an apocalyptic number.

12793984 is a gapful number since it is divisible by the number (14) 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 12793984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14810400).

12793984 is an abundant number, since it is smaller than the sum of its proper divisors (16826816).

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

12793984 is a wasteful number, since it uses less digits than its factorization.

12793984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 249 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 12793984 is about 3576.8679036274. The cubic root of 12793984 is about 233.8847656251.

The spelling of 12793984 in words is "twelve million, seven hundred ninety-three thousand, nine hundred eighty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 109 112 128 131 218 224 262 436 448 524 763 872 896 917 1048 1526 1744 1834 2096 3052 3488 3668 4192 6104 6976 7336 8384 12208 13952 14279 14672 16768 24416 28558 29344 48832 57116 58688 97664 99953 114232 117376 199906 228464 399812 456928 799624 913856 1599248 1827712 3198496 6396992 12793984