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27930525054 = 2317564748491
BaseRepresentation
bin11010000000110010…
…011111110101111110
32200002112012200102220
4122000302133311332
5424200203300204
620455304030210
72006100355125
oct320062376576
980075180386
1027930525054
1110933064963
1254b5a62366
132831704203
1414cd666abc
15ad70e11d9
hex680c9fd7e

27930525054 has 32 divisors (see below), whose sum is σ = 59158688256. Its totient is φ = 8760785280.

The previous prime is 27930525053. The next prime is 27930525059. The reversal of 27930525054 is 45052503972.

It is a super-2 number, since 2×279305250542 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27930524997 and 27930525015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27930525053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551749 + ... + 600239.

It is an arithmetic number, because the mean of its divisors is an integer number (1848709008).

Almost surely, 227930525054 is an apocalyptic number.

27930525054 is an abundant number, since it is smaller than the sum of its proper divisors (31228163202).

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

27930525054 is a wasteful number, since it uses less digits than its factorization.

27930525054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54160.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 27930525054 in words is "twenty-seven billion, nine hundred thirty million, five hundred twenty-five thousand, fifty-four".

Divisors: 1 2 3 6 17 34 51 102 5647 11294 16941 33882 48491 95999 96982 145473 191998 287997 290946 575994 824347 1648694 2473041 4946082 273828677 547657354 821486031 1642972062 4655087509 9310175018 13965262527 27930525054