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27885590068 = 227995913931
BaseRepresentation
bin11001111110000111…
…000101011000110100
32122222101122202020011
4121332013011120310
5424102202340233
620451020550004
72005013414260
oct317607053064
978871582204
1027885590068
111090a763606
1254a29b2304
13282530036b
1414c76cb0a0
15ad31b70cd
hex67e1c5634

27885590068 has 12 divisors (see below), whose sum is σ = 55771180192. Its totient is φ = 11950967160.

The previous prime is 27885590023. The next prime is 27885590119. The reversal of 27885590068 is 86009558872.

27885590068 is an admirable number.

It is a super-2 number, since 2×278855900682 (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27885589994 and 27885590021.

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, 497956938 + ... + 497956993.

Almost surely, 227885590068 is an apocalyptic number.

27885590068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27885590068 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27885590068 is a wasteful number, since it uses less digits than its factorization.

27885590068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995913942 (or 995913940 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 27885590068 in words is "twenty-seven billion, eight hundred eighty-five million, five hundred ninety thousand, sixty-eight".

Divisors: 1 2 4 7 14 28 995913931 1991827862 3983655724 6971397517 13942795034 27885590068