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28124460852 = 22314887157433
BaseRepresentation
bin11010001100010110…
…010011011100110100
32200121001010122100020
4122030112103130310
5430044330221402
620530432445140
72013643654455
oct321426233464
980531118306
1028124460852
1110a22585784
12554a9a97b0
132862947217
14150b30b12c
15ae914d8bc
hex68c593734

28124460852 has 24 divisors (see below), whose sum is σ = 65628566976. Its totient is φ = 9374131008.

The previous prime is 28124460829. The next prime is 28124460907. The reversal of 28124460852 is 25806442182.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 99928 + ... + 257360.

It is an arithmetic number, because the mean of its divisors is an integer number (2734523624).

Almost surely, 228124460852 is an apocalyptic number.

It is an amenable number.

28124460852 is an abundant number, since it is smaller than the sum of its proper divisors (37504106124).

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

28124460852 is a wasteful number, since it uses less digits than its factorization.

28124460852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172327 (or 172325 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The spelling of 28124460852 in words is "twenty-eight billion, one hundred twenty-four million, four hundred sixty thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 12 14887 29774 44661 59548 89322 157433 178644 314866 472299 629732 944598 1889196 2343705071 4687410142 7031115213 9374820284 14062230426 28124460852