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87104288 = 256740627
BaseRepresentation
bin1010011000100…
…01101100100000
320001220100121202
411030101230200
5134244314123
612350540332
72105242235
oct514215440
9201810552
1087104288
1145193817
12252076a8
1315079bcb
14b7d578c
1579a8a28
hex5311b20

87104288 has 24 divisors (see below), whose sum is σ = 174050352. Its totient is φ = 42901056.

The previous prime is 87104273. The next prime is 87104293. The reversal of 87104288 is 88240178.

It is a happy 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, 18170 + ... + 22457.

It is an arithmetic number, because the mean of its divisors is an integer number (7252098).

Almost surely, 287104288 is an apocalyptic number.

It is an amenable number.

87104288 is a deficient number, since it is larger than the sum of its proper divisors (86946064).

87104288 is a wasteful number, since it uses less digits than its factorization.

87104288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40704 (or 40696 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 87104288 is about 9332.9678023660. The cubic root of 87104288 is about 443.2817432320.

The spelling of 87104288 in words is "eighty-seven million, one hundred four thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 16 32 67 134 268 536 1072 2144 40627 81254 162508 325016 650032 1300064 2722009 5444018 10888036 21776072 43552144 87104288