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80872160 = 2552691879
BaseRepresentation
bin1001101001000…
…00001011100000
312122011201202012
410310200023200
5131200402120
612005212052
72001254615
oct464401340
9178151665
1080872160
11417174a6
1223101028
13139a7365
14aa5250c
1571771c5
hex4d202e0

80872160 has 48 divisors (see below), whose sum is σ = 191872800. Its totient is φ = 32211456.

The previous prime is 80872159. The next prime is 80872171. The reversal of 80872160 is 6127808.

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 7 ways as a sum of consecutive naturals, for example, 42101 + ... + 43979.

It is an arithmetic number, because the mean of its divisors is an integer number (3997350).

Almost surely, 280872160 is an apocalyptic number.

80872160 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 80872160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95936400).

80872160 is an abundant number, since it is smaller than the sum of its proper divisors (111000640).

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

80872160 is a wasteful number, since it uses less digits than its factorization.

80872160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 80872160 is about 8992.8949732553. The cubic root of 80872160 is about 432.4471250807.

Adding to 80872160 its reverse (6127808), we get a palindrome (86999968).

The spelling of 80872160 in words is "eighty million, eight hundred seventy-two thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 269 538 1076 1345 1879 2152 2690 3758 4304 5380 7516 8608 9395 10760 15032 18790 21520 30064 37580 43040 60128 75160 150320 300640 505451 1010902 2021804 2527255 4043608 5054510 8087216 10109020 16174432 20218040 40436080 80872160