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28064462108 = 2231136761471
BaseRepresentation
bin11010001000110001…
…011011010100011100
32200102212020101112112
4122020301123110130
5424434000241413
620520450453152
72012314664144
oct321061332434
980385211475
1028064462108
11109a1725841
1255328941b8
13285339a9c7
14150336d924
15ae3c4b2a8
hex688c5b51c

28064462108 has 24 divisors (see below), whose sum is σ = 49405784064. Its totient is φ = 13948772400.

The previous prime is 28064462077. The next prime is 28064462119. The reversal of 28064462108 is 80126446082.

It is a super-2 number, since 2×280644621082 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425813 + ... + 487283.

It is an arithmetic number, because the mean of its divisors is an integer number (2058574336).

Almost surely, 228064462108 is an apocalyptic number.

It is an amenable number.

28064462108 is a deficient number, since it is larger than the sum of its proper divisors (21341321956).

28064462108 is a wasteful number, since it uses less digits than its factorization.

28064462108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62153 (or 62151 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 28064462108 in words is "twenty-eight billion, sixty-four million, four hundred sixty-two thousand, one hundred eight".

Divisors: 1 2 4 311 367 622 734 1244 1468 61471 114137 122942 228274 245884 456548 19117481 22559857 38234962 45119714 76469924 90239428 7016115527 14032231054 28064462108