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28053372282 = 23131923118191
BaseRepresentation
bin11010001000000111…
…000111110101111010
32200102002100222011020
4122020013013311322
5424423130403112
620515413043310
72012121505245
oct321007076572
980362328136
1028053372282
11109964408a1
12552b026536
132850cb7090
141501ac425c
15ae2caa48c
hex6881c7d7a

28053372282 has 64 divisors (see below), whose sum is σ = 63638077440. Its totient is φ = 8172964800.

The previous prime is 28053372257. The next prime is 28053372299. The reversal of 28053372282 is 28227335082.

It is a happy number.

It is a super-3 number, since 3×280533722823 (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3420807 + ... + 3428997.

It is an arithmetic number, because the mean of its divisors is an integer number (994344960).

Almost surely, 228053372282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28053372282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31819038720).

28053372282 is an abundant number, since it is smaller than the sum of its proper divisors (35584705158).

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

28053372282 is a wasteful number, since it uses less digits than its factorization.

28053372282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 28053372282 in words is "twenty-eight billion, fifty-three million, three hundred seventy-two thousand, two hundred eighty-two".

Divisors: 1 2 3 6 13 19 26 38 39 57 78 114 247 494 741 1482 2311 4622 6933 8191 13866 16382 24573 30043 43909 49146 60086 87818 90129 106483 131727 155629 180258 212966 263454 311258 319449 466887 570817 638898 933774 1141634 1712451 2023177 3424902 4046354 6069531 12139062 18929401 37858802 56788203 113576406 246082213 359658619 492164426 719317238 738246639 1078975857 1476493278 2157951714 4675562047 9351124094 14026686141 28053372282