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67881052 = 2283204461
BaseRepresentation
bin1000000101111…
…00100001011100
311201201201022001
410002330201130
5114334143202
610422532044
71452656641
oct402744134
9151651261
1067881052
1135354048
121a897024
13110a9205
14902ddc8
155e5cd87
hex40bc85c

67881052 has 12 divisors (see below), whose sum is σ = 120223656. Its totient is φ = 33531440.

The previous prime is 67881029. The next prime is 67881061. The reversal of 67881052 is 25018876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101899 + ... + 102562.

It is an arithmetic number, because the mean of its divisors is an integer number (10018638).

Almost surely, 267881052 is an apocalyptic number.

It is an amenable number.

67881052 is a deficient number, since it is larger than the sum of its proper divisors (52342604).

67881052 is a wasteful number, since it uses less digits than its factorization.

67881052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204548 (or 204546 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 67881052 is about 8238.9958125976. The cubic root of 67881052 is about 407.9273787830.

The spelling of 67881052 in words is "sixty-seven million, eight hundred eighty-one thousand, fifty-two".

Divisors: 1 2 4 83 166 332 204461 408922 817844 16970263 33940526 67881052