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378688000 = 29536197
BaseRepresentation
bin10110100100100…
…101001000000000
3222101120100021111
4112210211020000
51233421004000
6101324333104
712245536435
oct2644451000
9871510244
10378688000
11184839999
12a69a4194
13605bbc52
1438417b8c
15233a3cba
hex16925200

378688000 has 160 divisors (see below), whose sum is σ = 969656688. Its totient is φ = 147456000.

The previous prime is 378687997. The next prime is 378688043. The reversal of 378688000 is 886873.

It can be written as a sum of positive squares in 8 ways, for example, as 8202496 + 370485504 = 2864^2 + 19248^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3903952 + ... + 3904048.

Almost surely, 2378688000 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 378688000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484828344).

378688000 is an abundant number, since it is smaller than the sum of its proper divisors (590968688).

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

378688000 is an frugal number, since it uses more digits than its factorization.

378688000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 378688000 is about 19459.9075023495. The cubic root of 378688000 is about 723.4810847748.

The spelling of 378688000 in words is "three hundred seventy-eight million, six hundred eighty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 61 64 80 97 100 122 125 128 160 194 200 244 250 256 305 320 388 400 485 488 500 512 610 640 776 800 970 976 1000 1220 1280 1525 1552 1600 1940 1952 2000 2425 2440 2560 3050 3104 3200 3880 3904 4000 4850 4880 5917 6100 6208 6400 7625 7760 7808 8000 9700 9760 11834 12125 12200 12416 12800 15250 15520 15616 16000 19400 19520 23668 24250 24400 24832 29585 30500 31040 31232 32000 38800 39040 47336 48500 48800 49664 59170 61000 62080 64000 77600 78080 94672 97000 97600 118340 122000 124160 147925 155200 156160 189344 194000 195200 236680 244000 248320 295850 310400 378688 388000 390400 473360 488000 591700 620800 739625 757376 776000 780800 946720 976000 1183400 1241600 1479250 1514752 1552000 1893440 1952000 2366800 2958500 3029504 3104000 3786880 3904000 4733600 5917000 6208000 7573760 9467200 11834000 15147520 18934400 23668000 37868800 47336000 75737600 94672000 189344000 378688000