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27382505808 = 243781495553
BaseRepresentation
bin11001100000000111…
…111110000101010000
32121200100000102100210
4121200013332011100
5422034410141213
620325050044120
71656364313310
oct314007760520
977610012323
1027382505808
111068178a999
125382419640
132775008478
14147a971440
15aa3e400c3
hex6601fe150

27382505808 has 40 divisors (see below), whose sum is σ = 80843589568. Its totient is φ = 7823572992.

The previous prime is 27382505807. The next prime is 27382505837. The reversal of 27382505808 is 80850528372.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27382505803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40747441 + ... + 40748112.

Almost surely, 227382505808 is an apocalyptic number.

27382505808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27382505808 is an abundant number, since it is smaller than the sum of its proper divisors (53461083760).

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

27382505808 is a wasteful number, since it uses less digits than its factorization.

27382505808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81495571 (or 81495565 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 27382505808 in words is "twenty-seven billion, three hundred eighty-two million, five hundred five thousand, eight hundred eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 81495553 162991106 244486659 325982212 488973318 570468871 651964424 977946636 1140937742 1303928848 1711406613 1955893272 2281875484 3422813226 3911786544 4563750968 6845626452 9127501936 13691252904 27382505808