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67396431704 = 23719471347713
BaseRepresentation
bin111110110001001000…
…111110111101011000
320102221222021110121012
4332301020332331120
52101011441303304
650543403233052
74604101134350
oct766110767530
9212858243535
1067396431704
112664558a738
121108ab18788
136480c254b4
143394d25b60
151b46c7816e
hexfb123ef58

67396431704 has 64 divisors (see below), whose sum is σ = 155256652800. Its totient is φ = 26781732864.

The previous prime is 67396431701. The next prime is 67396431727. The reversal of 67396431704 is 40713469376.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67396431701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623849 + ... + 723864.

It is an arithmetic number, because the mean of its divisors is an integer number (2425885200).

Almost surely, 267396431704 is an apocalyptic number.

It is an amenable number.

67396431704 is an abundant number, since it is smaller than the sum of its proper divisors (87860221096).

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

67396431704 is a wasteful number, since it uses less digits than its factorization.

67396431704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347792 (or 1347788 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 50.

The spelling of 67396431704 in words is "sixty-seven billion, three hundred ninety-six million, four hundred thirty-one thousand, seven hundred four".

Divisors: 1 2 4 7 8 14 19 28 38 47 56 76 94 133 152 188 266 329 376 532 658 893 1064 1316 1786 2632 3572 6251 7144 12502 25004 50008 1347713 2695426 5390852 9433991 10781704 18867982 25606547 37735964 51213094 63342511 75471928 102426188 126685022 179245829 204852376 253370044 358491658 443397577 506740088 716983316 886795154 1203507709 1433966632 1773590308 2407015418 3547180616 4814030836 8424553963 9628061672 16849107926 33698215852 67396431704