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86118400 = 21252292
BaseRepresentation
bin1010010001000…
…01000000000000
320000001021020101
411020201000000
5134021242100
612313452144
72063665024
oct510410000
9200037211
1086118400
1144680035
1224a11054
1314ac3244
14b61a384
15786186a
hex5221000

86118400 has 117 divisors (see below), whose sum is σ = 221165191. Its totient is φ = 33259520.

The previous prime is 86118343. The next prime is 86118401. The reversal of 86118400 is 481168.

The square root of 86118400 is 9280.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1183744 + 84934656 = 1088^2 + 9216^2 .

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (86118401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2969586 + ... + 2969614.

Almost surely, 286118400 is an apocalyptic number.

86118400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

86118400 is the 9280-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86118400

86118400 is an abundant number, since it is smaller than the sum of its proper divisors (135046791).

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

86118400 is an equidigital number, since it uses as much as digits as its factorization.

86118400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The cubic root of 86118400 is about 441.6029685441.

Adding to 86118400 its reverse (481168), we get a palindrome (86599568).

The spelling of 86118400 in words is "eighty-six million, one hundred eighteen thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 29 32 40 50 58 64 80 100 116 128 145 160 200 232 256 290 320 400 464 512 580 640 725 800 841 928 1024 1160 1280 1450 1600 1682 1856 2048 2320 2560 2900 3200 3364 3712 4096 4205 4640 5120 5800 6400 6728 7424 8410 9280 10240 11600 12800 13456 14848 16820 18560 20480 21025 23200 25600 26912 29696 33640 37120 42050 46400 51200 53824 59392 67280 74240 84100 92800 102400 107648 118784 134560 148480 168200 185600 215296 269120 296960 336400 371200 430592 538240 593920 672800 742400 861184 1076480 1345600 1484800 1722368 2152960 2691200 2969600 3444736 4305920 5382400 8611840 10764800 17223680 21529600 43059200 86118400