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85184208 = 24321015857
BaseRepresentation
bin1010001001111…
…00111011010000
312221021210202200
411010330323100
5133301343313
612241443200
72053024314
oct504747320
9187253680
1085184208
11440a217a
1224640500
1314856c75
14b455b44
157729b73
hex513ced0

85184208 has 60 divisors (see below), whose sum is σ = 240798948. Its totient is φ = 28108800.

The previous prime is 85184171. The next prime is 85184213. The reversal of 85184208 is 80248158.

It can be written as a sum of positive squares in 2 ways, for example, as 81216144 + 3968064 = 9012^2 + 1992^2 .

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11616 + ... + 17472.

Almost surely, 285184208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85184208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120399474).

85184208 is an abundant number, since it is smaller than the sum of its proper divisors (155614740).

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

85184208 is a wasteful number, since it uses less digits than its factorization.

85184208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972 (or 5963 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 85184208 is about 9229.5291320847. The cubic root of 85184208 is about 440.0003581264. Note that the first 3 decimals are identical.

The spelling of 85184208 in words is "eighty-five million, one hundred eighty-four thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 101 144 202 303 404 606 808 909 1212 1616 1818 2424 3636 4848 5857 7272 11714 14544 17571 23428 35142 46856 52713 70284 93712 105426 140568 210852 281136 421704 591557 843408 1183114 1774671 2366228 3549342 4732456 5324013 7098684 9464912 10648026 14197368 21296052 28394736 42592104 85184208