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27870332072 = 231116713071451
BaseRepresentation
bin11001111101001100…
…111000010010101000
32122221022221120012012
4121331030320102220
5424034301111242
620445313535052
72004436625312
oct317514702250
978838846165
1027870332072
1110902091aa0
125499874488
1328220ba46b
1414c56787b2
15ad1ba1282
hex67d3384a8

27870332072 has 64 divisors (see below), whose sum is σ = 57432291840. Its totient is φ = 12574168000.

The previous prime is 27870332059. The next prime is 27870332089. The reversal of 27870332072 is 27023307872.

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 15 ways as a sum of consecutive naturals, for example, 19206947 + ... + 19208397.

It is an arithmetic number, because the mean of its divisors is an integer number (897379560).

Almost surely, 227870332072 is an apocalyptic number.

27870332072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27870332072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28716145920).

27870332072 is an abundant number, since it is smaller than the sum of its proper divisors (29561959768).

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

27870332072 is a wasteful number, since it uses less digits than its factorization.

27870332072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 27870332072 in words is "twenty-seven billion, eight hundred seventy million, three hundred thirty-two thousand, seventy-two".

Divisors: 1 2 4 8 11 22 44 88 167 334 668 1307 1336 1451 1837 2614 2902 3674 5228 5804 7348 10456 11608 14377 14696 15961 28754 31922 57508 63844 115016 127688 218269 242317 436538 484634 873076 969268 1746152 1896457 1938536 2400959 2665487 3792914 4801918 5330974 7585828 9603836 10661948 15171656 19207672 20861027 21323896 41722054 83444108 166888216 316708319 633416638 1266833276 2533666552 3483791509 6967583018 13935166036 27870332072