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12580992 = 273267163
BaseRepresentation
bin101111111111…
…100010000000
3212200011212200
4233333202000
511210042432
61125353200
7211636164
oct57774200
925604780
1012580992
117113316
124268800
1327b6598
141956ca4
151187a7c
hexbff880

12580992 has 96 divisors (see below), whose sum is σ = 36968880. Its totient is φ = 4105728.

The previous prime is 12580963. The next prime is 12580993. The reversal of 12580992 is 29908521.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12580993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77103 + ... + 77265.

Almost surely, 212580992 is an apocalyptic number.

12580992 is a gapful number since it is divisible by the number (12) 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 12580992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18484440).

12580992 is an abundant number, since it is smaller than the sum of its proper divisors (24387888).

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

12580992 is a wasteful number, since it uses less digits than its factorization.

12580992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 12580992 is about 3546.9694106378. The cubic root of 12580992 is about 232.5796050686.

The spelling of 12580992 in words is "twelve million, five hundred eighty thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 67 72 96 128 134 144 163 192 201 268 288 326 384 402 489 536 576 603 652 804 978 1072 1152 1206 1304 1467 1608 1956 2144 2412 2608 2934 3216 3912 4288 4824 5216 5868 6432 7824 8576 9648 10432 10921 11736 12864 15648 19296 20864 21842 23472 25728 31296 32763 38592 43684 46944 62592 65526 77184 87368 93888 98289 131052 174736 187776 196578 262104 349472 393156 524208 698944 786312 1048416 1397888 1572624 2096832 3145248 4193664 6290496 12580992