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28142392070 = 25132191078191
BaseRepresentation
bin11010001101011010…
…101101001100000110
32200122021212122100102
4122031122231030012
5430113423021240
620532313044102
72014252246202
oct321532551406
980567778312
1028142392070
1110a31712771
1255549b6632
132866584b00
14150d857b02
15aea9e1815
hex68d6ad306

28142392070 has 96 divisors (see below), whose sum is σ = 58286407680. Its totient is φ = 9750948480.

The previous prime is 28142392043. The next prime is 28142392073. The reversal of 28142392070 is 7029324182.

28142392070 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28142392073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3431675 + ... + 3439865.

It is an arithmetic number, because the mean of its divisors is an integer number (607150080).

Almost surely, 228142392070 is an apocalyptic number.

28142392070 is an abundant number, since it is smaller than the sum of its proper divisors (30144015610).

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

28142392070 is a wasteful number, since it uses less digits than its factorization.

28142392070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350 (or 8337 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 28142392070 in words is "twenty-eight billion, one hundred forty-two million, three hundred ninety-two thousand, seventy".

Divisors: 1 2 5 10 13 19 26 38 65 95 107 130 169 190 214 247 338 494 535 845 1070 1235 1391 1690 2033 2470 2782 3211 4066 6422 6955 8191 10165 13910 16055 16382 18083 20330 26429 32110 36166 40955 52858 81910 90415 106483 132145 155629 180830 212966 264290 311258 343577 532415 687154 778145 876437 1064830 1384279 1556290 1717885 1752874 2023177 2768558 3435770 4046354 4382185 6921395 8764370 10115885 11393681 13842790 16652303 20231770 22787362 26301301 33304606 52602602 56968405 83261515 113936810 131506505 148117853 166523030 216479939 263013010 296235706 432959878 740589265 1082399695 1481178530 2164799390 2814239207 5628478414 14071196035 28142392070