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86808320 = 28567819
BaseRepresentation
bin1010010110010…
…01011100000000
320001100022121222
411023021130000
5134210331240
612340334212
72102600324
oct513113400
9201308558
1086808320
1145001415
12250a4368
1314ca5291
14b759984
15794aeb5
hex52c9700

86808320 has 36 divisors (see below), whose sum is σ = 207936120. Its totient is φ = 34722816.

The previous prime is 86808311. The next prime is 86808331. The reversal of 86808320 is 2380868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32630 + ... + 35189.

Almost surely, 286808320 is an apocalyptic number.

86808320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86808320 is an abundant number, since it is smaller than the sum of its proper divisors (121127800).

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

86808320 is an equidigital number, since it uses as much as digits as its factorization.

86808320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67840 (or 67826 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 86808320 is about 9317.0982607247. The cubic root of 86808320 is about 442.7791040331.

The spelling of 86808320 in words is "eighty-six million, eight hundred eight thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1280 67819 135638 271276 339095 542552 678190 1085104 1356380 2170208 2712760 4340416 5425520 8680832 10851040 17361664 21702080 43404160 86808320