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28030084425 = 345274742073
BaseRepresentation
bin11010000110101110…
…010010010101001001
32200100110112211020000
4122012232102111021
5424401200200200
620513221553213
72011416533520
oct320656222511
980313484200
1028030084425
1110984285332
125523275809
132849222295
1414dc9814b7
15ae0c0a300
hex686b92549

28030084425 has 120 divisors (see below), whose sum is σ = 60602716416. Its totient is φ = 12540821760.

The previous prime is 28030084409. The next prime is 28030084573. The reversal of 28030084425 is 52448003082.

It is not a de Polignac number, because 28030084425 - 24 = 28030084409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28030084425.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 645189 + ... + 687261.

Almost surely, 228030084425 is an apocalyptic number.

28030084425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28030084425 is an abundant number, since it is smaller than the sum of its proper divisors (32572631991).

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

28030084425 is a wasteful number, since it uses less digits than its factorization.

28030084425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42149 (or 42135 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 28030084425 in words is "twenty-eight billion, thirty million, eighty-four thousand, four hundred twenty-five".

Divisors: 1 3 5 7 9 15 21 25 27 35 45 47 63 75 81 105 135 141 175 189 225 235 315 329 405 423 525 567 675 705 945 987 1175 1269 1575 1645 2025 2115 2835 2961 3525 3807 4725 4935 6345 8225 8883 10575 14175 14805 19035 24675 26649 31725 42073 44415 74025 95175 126219 133245 210365 222075 294511 378657 631095 666225 883533 1051825 1135971 1472555 1893285 1977431 2650599 3155475 3407913 4417665 5679855 5932293 7362775 7951797 9466425 9887155 13252995 13842017 17039565 17796879 22088325 23855391 28399275 29661465 39758985 41526051 49435775 53390637 66264975 69210085 85197825 88984395 119276955 124578153 148307325 160171911 198794925 207630255 266953185 346050425 373734459 444921975 596384775 622890765 800859555 1038151275 1121203377 1334765925 1868672295 3114453825 4004297775 5606016885 9343361475 28030084425