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28002228286 = 2929216223
BaseRepresentation
bin11010000101000100…
…000001100000111110
32200021112010120210011
4122011010001200332
5424322032301121
620510344533434
72010631004344
oct320504014076
980245116704
1028002228286
111096a58962a
125515a8127a
13284351b066
1414d8dad994
15add5567e1
hex68510183e

28002228286 has 12 divisors (see below), whose sum is σ = 42051196512. Its totient is φ = 13985180864.

The previous prime is 28002228281. The next prime is 28002228341. The reversal of 28002228286 is 68282220082.

It is a super-3 number, since 3×280022282863 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002228281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1717971 + ... + 1734193.

It is an arithmetic number, because the mean of its divisors is an integer number (3504266376).

Almost surely, 228002228286 is an apocalyptic number.

28002228286 is a deficient number, since it is larger than the sum of its proper divisors (14048968226).

28002228286 is an frugal number, since it uses more digits than its factorization.

28002228286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18083 (or 17154 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 28002228286 in words is "twenty-eight billion, two million, two hundred twenty-eight thousand, two hundred eighty-six".

Divisors: 1 2 929 1858 16223 32446 863041 1726082 15071167 30142334 14001114143 28002228286