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87086470 = 2571173709
BaseRepresentation
bin1010011000011…
…01010110000110
320001212110011211
411030031112012
5134243231340
612350322034
72105136262
oct514152606
9201773154
1087086470
1145181399
12251b931a
1315071a73
14b7cd0a2
1579a35ea
hex530d586

87086470 has 32 divisors (see below), whose sum is σ = 160107840. Its totient is φ = 34097280.

The previous prime is 87086459. The next prime is 87086479. The reversal of 87086470 is 7468078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87086479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122476 + ... + 123184.

It is an arithmetic number, because the mean of its divisors is an integer number (5003370).

Almost surely, 287086470 is an apocalyptic number.

87086470 is a deficient number, since it is larger than the sum of its proper divisors (73021370).

87086470 is a wasteful number, since it uses less digits than its factorization.

87086470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 87086470 is about 9332.0131804450. The cubic root of 87086470 is about 443.2515153565.

The spelling of 87086470 in words is "eighty-seven million, eighty-six thousand, four hundred seventy".

Divisors: 1 2 5 10 71 142 173 346 355 709 710 865 1418 1730 3545 7090 12283 24566 50339 61415 100678 122657 122830 245314 251695 503390 613285 1226570 8708647 17417294 43543235 87086470