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87472800 = 25325212149
BaseRepresentation
bin1010011011010…
…11101010100000
320002121002010100
411031223222200
5134343112200
612402502400
72111335512
oct515535240
9202532110
1087472800
1145415678
1225364a00
131517886c
14b88dbb2
157a2cd00
hex536baa0

87472800 has 108 divisors (see below), whose sum is σ = 308476350. Its totient is φ = 23324160.

The previous prime is 87472799. The next prime is 87472807. The reversal of 87472800 is 827478.

It can be written as a sum of positive squares in 3 ways, for example, as 83832336 + 3640464 = 9156^2 + 1908^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (87472807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1126 + ... + 13274.

Almost surely, 287472800 is an apocalyptic number.

87472800 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 87472800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154238175).

87472800 is an abundant number, since it is smaller than the sum of its proper divisors (221003550).

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

87472800 is a wasteful number, since it uses less digits than its factorization.

87472800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175 (or 12159 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 87472800 is about 9352.6894527724. The cubic root of 87472800 is about 443.9059942203.

The spelling of 87472800 in words is "eighty-seven million, four hundred seventy-two thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 32 36 40 45 48 50 60 72 75 80 90 96 100 120 144 150 160 180 200 225 240 288 300 360 400 450 480 600 720 800 900 1200 1440 1800 2400 3600 7200 12149 24298 36447 48596 60745 72894 97192 109341 121490 145788 182235 194384 218682 242980 291576 303725 364470 388768 437364 485960 546705 583152 607450 728940 874728 911175 971920 1093410 1166304 1214900 1457880 1749456 1822350 1943840 2186820 2429800 2733525 2915760 3498912 3644700 4373640 4859600 5467050 5831520 7289400 8747280 9719200 10934100 14578800 17494560 21868200 29157600 43736400 87472800