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68018802 = 23173767269
BaseRepresentation
bin1000000110111…
…10001001110010
311201222201020220
410003132021302
5114403100202
610425513510
71454102355
oct403361162
9151881226
1068018802
1135438595
121a942896
1311126b17
14906829c
155e88abc
hex40de272

68018802 has 64 divisors (see below), whose sum is σ = 150698880. Its totient is φ = 20376576.

The previous prime is 68018779. The next prime is 68018809. The reversal of 68018802 is 20881086.

It is not an unprimeable number, because it can be changed into a prime (68018809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252724 + ... + 252992.

It is an arithmetic number, because the mean of its divisors is an integer number (2354670).

Almost surely, 268018802 is an apocalyptic number.

68018802 is an abundant number, since it is smaller than the sum of its proper divisors (82680078).

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

68018802 is a wasteful number, since it uses less digits than its factorization.

68018802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 68018802 is about 8247.3512111465. The cubic root of 68018802 is about 408.2031259795.

Adding to 68018802 its reverse (20881086), we get a palindrome (88899888).

The spelling of 68018802 in words is "sixty-eight million, eighteen thousand, eight hundred two".

Divisors: 1 2 3 6 17 34 37 51 67 74 102 111 134 201 222 269 402 538 629 807 1139 1258 1614 1887 2278 2479 3417 3774 4573 4958 6834 7437 9146 9953 13719 14874 18023 19906 27438 29859 36046 42143 54069 59718 84286 108138 126429 169201 252858 306391 338402 507603 612782 666851 919173 1015206 1333702 1838346 2000553 4001106 11336467 22672934 34009401 68018802