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87025853390 = 2574130322597
BaseRepresentation
bin101000100001100100…
…1010010001111001110
322022121222111101222012
41101003021102033032
52411212104302030
6103551254021222
76200403356120
oct1210311221716
9268558441865
1087025853390
11339a8909793
1214a48947812
13828b8c0508
1442d7d05210
1523e51e3095
hex14432523ce

87025853390 has 32 divisors (see below), whose sum is σ = 183391072704. Its totient is φ = 29109692160.

The previous prime is 87025853389. The next prime is 87025853393. The reversal of 87025853390 is 9335852078.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87025853393) 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, 15158429 + ... + 15164168.

It is an arithmetic number, because the mean of its divisors is an integer number (5730971022).

Almost surely, 287025853390 is an apocalyptic number.

87025853390 is an abundant number, since it is smaller than the sum of its proper divisors (96365219314).

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

87025853390 is a wasteful number, since it uses less digits than its factorization.

87025853390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30322652.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 87025853390 in words is "eighty-seven billion, twenty-five million, eight hundred fifty-three thousand, three hundred ninety".

Divisors: 1 2 5 7 10 14 35 41 70 82 205 287 410 574 1435 2870 30322597 60645194 151612985 212258179 303225970 424516358 1061290895 1243226477 2122581790 2486452954 6216132385 8702585339 12432264770 17405170678 43512926695 87025853390