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27879014140 = 2251393950707
BaseRepresentation
bin11001111101101101…
…111111111011111100
32122221221021122202021
4121331231333323330
5424044011423030
620450224005524
72004603465415
oct317555777374
978857248667
1027879014140
1110906a81a5a
1254a07608a4
132823b3a193
1414c689880c
15ad281897a
hex67db7fefc

27879014140 has 12 divisors (see below), whose sum is σ = 58545929736. Its totient is φ = 11151605648.

The previous prime is 27879014131. The next prime is 27879014269. The reversal of 27879014140 is 4141097872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696975334 + ... + 696975373.

It is an arithmetic number, because the mean of its divisors is an integer number (4878827478).

Almost surely, 227879014140 is an apocalyptic number.

27879014140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27879014140 is an abundant number, since it is smaller than the sum of its proper divisors (30666915596).

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

27879014140 is a wasteful number, since it uses less digits than its factorization.

27879014140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393950716 (or 1393950714 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 27879014140 in words is "twenty-seven billion, eight hundred seventy-nine million, fourteen thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 1393950707 2787901414 5575802828 6969753535 13939507070 27879014140