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12942800 = 24521319131
BaseRepresentation
bin110001010111…
…110111010000
3220100120011222
4301113313100
511303132200
61141224212
7215004053
oct61276720
926316158
1012942800
117340132
124402068
1328b2180
141a0ca9a
151209d85
hexc57dd0

12942800 has 120 divisors (see below), whose sum is σ = 35518560. Its totient is φ = 4492800.

The previous prime is 12942799. The next prime is 12942821. The reversal of 12942800 is 824921.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 12942800.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 98735 + ... + 98865.

It is an arithmetic number, because the mean of its divisors is an integer number (295988).

Almost surely, 212942800 is an apocalyptic number.

12942800 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 12942800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17759280).

12942800 is an abundant number, since it is smaller than the sum of its proper divisors (22575760).

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

12942800 is a wasteful number, since it uses less digits than its factorization.

12942800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12942800 is about 3597.6103179750. The cubic root of 12942800 is about 234.7880993130.

The spelling of 12942800 in words is "twelve million, nine hundred forty-two thousand, eight hundred".

Divisors: 1 2 4 5 8 10 13 16 19 20 25 26 38 40 50 52 65 76 80 95 100 104 130 131 152 190 200 208 247 260 262 304 325 380 400 475 494 520 524 650 655 760 950 988 1040 1048 1235 1300 1310 1520 1703 1900 1976 2096 2470 2489 2600 2620 3275 3406 3800 3952 4940 4978 5200 5240 6175 6550 6812 7600 8515 9880 9956 10480 12350 12445 13100 13624 17030 19760 19912 24700 24890 26200 27248 32357 34060 39824 42575 49400 49780 52400 62225 64714 68120 85150 98800 99560 124450 129428 136240 161785 170300 199120 248900 258856 323570 340600 497800 517712 647140 681200 808925 995600 1294280 1617850 2588560 3235700 6471400 12942800