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78368000 = 28533179
BaseRepresentation
bin1001010101111…
…00110100000000
312110110111200112
410222330310000
5130030234000
611435410452
71641055064
oct452746400
9173414615
1078368000
1140267047
12222b3a28
131330b5c9
14a59daa4
156d30235
hex4abcd00

78368000 has 144 divisors (see below), whose sum is σ = 204072960. Its totient is φ = 29952000.

The previous prime is 78367997. The next prime is 78368033. The reversal of 78368000 is 86387.

It is a super-2 number, since 2×783680002 = 12283086848000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991961 + ... + 992039.

Almost surely, 278368000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78368000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102036480).

78368000 is an abundant number, since it is smaller than the sum of its proper divisors (125704960).

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

78368000 is an equidigital number, since it uses as much as digits as its factorization.

78368000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 78368000 is about 8852.5702482386. The cubic root of 78368000 is about 427.9367536905.

The spelling of 78368000 in words is "seventy-eight million, three hundred sixty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 31 32 40 50 62 64 79 80 100 124 125 128 155 158 160 200 248 250 256 310 316 320 395 400 496 500 620 632 640 775 790 800 992 1000 1240 1264 1280 1550 1580 1600 1975 1984 2000 2449 2480 2528 3100 3160 3200 3875 3950 3968 4000 4898 4960 5056 6200 6320 6400 7750 7900 7936 8000 9796 9875 9920 10112 12245 12400 12640 15500 15800 16000 19592 19750 19840 20224 24490 24800 25280 31000 31600 32000 39184 39500 39680 48980 49600 50560 61225 62000 63200 78368 79000 97960 99200 101120 122450 124000 126400 156736 158000 195920 198400 244900 248000 252800 306125 313472 316000 391840 489800 496000 505600 612250 626944 632000 783680 979600 992000 1224500 1264000 1567360 1959200 2449000 2528000 3134720 3918400 4898000 7836800 9796000 15673600 19592000 39184000 78368000