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27881034 = 2319124329
BaseRepresentation
bin110101001011…
…0111001001010
31221110111120220
41222112321022
524114143114
62433330510
7455661546
oct152267112
957414526
1027881034
1114813485
129406a36
135a1266c
1439baa26
1526ab0a9
hex1a96e4a

27881034 has 16 divisors (see below), whose sum is σ = 56056320. Its totient is φ = 9244640.

The previous prime is 27881033. The next prime is 27881039. The reversal of 27881034 is 43018872.

It is a junction number, because it is equal to n+sod(n) for n = 27880986 and 27881004.

It is not an unprimeable number, because it can be changed into a prime (27881033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11019 + ... + 13310.

It is an arithmetic number, because the mean of its divisors is an integer number (3503520).

Almost surely, 227881034 is an apocalyptic number.

27881034 is an abundant number, since it is smaller than the sum of its proper divisors (28175286).

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

27881034 is a wasteful number, since it uses less digits than its factorization.

27881034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24525.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 27881034 is about 5280.2494259268. The cubic root of 27881034 is about 303.2282261393.

The spelling of 27881034 in words is "twenty-seven million, eight hundred eighty-one thousand, thirty-four".

Divisors: 1 2 3 6 191 382 573 1146 24329 48658 72987 145974 4646839 9293678 13940517 27881034