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85968800 = 2552412621
BaseRepresentation
bin1010001111111…
…00011110100000
312222202200000122
411013330132200
5134002000200
612310335412
72062502621
oct507743640
9188680018
1085968800
11445886a5
122495a568
1314a70118
14b5bba48
157832385
hex51fc7a0

85968800 has 72 divisors (see below), whose sum is σ = 215072172. Its totient is φ = 33536000.

The previous prime is 85968793. The next prime is 85968823. The reversal of 85968800 is 886958.

It can be written as a sum of positive squares in 6 ways, for example, as 22543504 + 63425296 = 4748^2 + 7964^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31490 + ... + 34110.

Almost surely, 285968800 is an apocalyptic number.

85968800 is a gapful number since it is divisible by the number (80) 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 85968800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107536086).

85968800 is an abundant number, since it is smaller than the sum of its proper divisors (129103372).

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

85968800 is a wasteful number, since it uses less digits than its factorization.

85968800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682 (or 2669 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 85968800 is about 9271.9361516352. The cubic root of 85968800 is about 441.3471111232.

It can be divided in two parts, 85968 and 800, that added together give a palindrome (86768).

The spelling of 85968800 in words is "eighty-five million, nine hundred sixty-eight thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 41 50 80 82 100 160 164 200 205 328 400 410 656 800 820 1025 1312 1640 2050 2621 3280 4100 5242 6560 8200 10484 13105 16400 20968 26210 32800 41936 52420 65525 83872 104840 107461 131050 209680 214922 262100 419360 429844 524200 537305 859688 1048400 1074610 1719376 2096800 2149220 2686525 3438752 4298440 5373050 8596880 10746100 17193760 21492200 42984400 85968800