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68288000 = 29531197
BaseRepresentation
bin1000001000111…
…11111000000000
311202111101112012
410010133320000
5114440204000
610435352052
71456303244
oct404377000
9152441465
1068288000
1135601870
121aa52628
13111bc501
1490d8424
155edd735
hex411fe00

68288000 has 160 divisors (see below), whose sum is σ = 187675488. Its totient is φ = 24576000.

The previous prime is 68287993. The next prime is 68288021. The reversal of 68288000 is 88286.

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 (32).

It is a congruent number.

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, 703952 + ... + 704048.

Almost surely, 268288000 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 68288000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93837744).

68288000 is an abundant number, since it is smaller than the sum of its proper divisors (119387488).

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

68288000 is an equidigital number, since it uses as much as digits as its factorization.

68288000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 68288000 is about 8263.6553655147. The cubic root of 68288000 is about 408.7409322556.

The spelling of 68288000 in words is "sixty-eight million, two hundred eighty-eight thousand".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 32 40 44 50 55 64 80 88 97 100 110 125 128 160 176 194 200 220 250 256 275 320 352 388 400 440 485 500 512 550 640 704 776 800 880 970 1000 1067 1100 1280 1375 1408 1552 1600 1760 1940 2000 2134 2200 2425 2560 2750 2816 3104 3200 3520 3880 4000 4268 4400 4850 5335 5500 5632 6208 6400 7040 7760 8000 8536 8800 9700 10670 11000 12125 12416 12800 14080 15520 16000 17072 17600 19400 21340 22000 24250 24832 26675 28160 31040 32000 34144 35200 38800 42680 44000 48500 49664 53350 62080 64000 68288 70400 77600 85360 88000 97000 106700 124160 133375 136576 140800 155200 170720 176000 194000 213400 248320 266750 273152 310400 341440 352000 388000 426800 533500 546304 620800 682880 704000 776000 853600 1067000 1241600 1365760 1552000 1707200 2134000 2731520 3104000 3414400 4268000 6208000 6828800 8536000 13657600 17072000 34144000 68288000