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68018950 = 2523736767
BaseRepresentation
bin1000000110111…
…10001100000110
311201222201110101
410003132030012
5114403101300
610425514314
71454102656
oct403361406
9151881411
1068018950
113543870a
121a94299a
1311126bcc
149068366
155e88b6a
hex40de306

68018950 has 24 divisors (see below), whose sum is σ = 129938112. Its totient is φ = 26471520.

The previous prime is 68018939. The next prime is 68018953. The reversal of 68018950 is 5981086.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68018953) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16534 + ... + 20233.

It is an arithmetic number, because the mean of its divisors is an integer number (5414088).

Almost surely, 268018950 is an apocalyptic number.

68018950 is a deficient number, since it is larger than the sum of its proper divisors (61919162).

68018950 is a wasteful number, since it uses less digits than its factorization.

68018950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36816 (or 36811 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 68018950 is about 8247.3601837194. The cubic root of 68018950 is about 408.2034220448.

It can be divided in two parts, 6801 and 8950, that added together give a palindrome (15751).

The spelling of 68018950 in words is "sixty-eight million, eighteen thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 37 50 74 185 370 925 1850 36767 73534 183835 367670 919175 1360379 1838350 2720758 6801895 13603790 34009475 68018950