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68447804 = 22195316993
BaseRepresentation
bin1000001010001…
…10111000111100
311202210111201212
410011012320330
5120010312204
610443023552
71460540165
oct405067074
9152714655
1068447804
1135700937
121ab0abb8
1311247179
14913a76c
156020c6e
hex4146e3c

68447804 has 24 divisors (see below), whose sum is σ = 128474640. Its totient is φ = 31809024.

The previous prime is 68447773. The next prime is 68447807. The reversal of 68447804 is 40874486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68447807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4469 + ... + 12524.

It is an arithmetic number, because the mean of its divisors is an integer number (5353110).

Almost surely, 268447804 is an apocalyptic number.

It is an amenable number.

68447804 is a deficient number, since it is larger than the sum of its proper divisors (60026836).

68447804 is a wasteful number, since it uses less digits than its factorization.

68447804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17069 (or 17067 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 68447804 is about 8273.3188020286. The cubic root of 68447804 is about 409.0595219077.

The spelling of 68447804 in words is "sixty-eight million, four hundred forty-seven thousand, eight hundred four".

Divisors: 1 2 4 19 38 53 76 106 212 1007 2014 4028 16993 33986 67972 322867 645734 900629 1291468 1801258 3602516 17111951 34223902 68447804