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67780076 = 22713296421
BaseRepresentation
bin1000000101000…
…11110111101100
311201112120210012
410002203313230
5114322430301
610420432352
71452056360
oct402436754
9151476705
1067780076
11352951a1
121a8486b8
1311072270
1490052a0
155e3cebb
hex40a3dec

67780076 has 48 divisors (see below), whose sum is σ = 151045440. Its totient is φ = 25885440.

The previous prime is 67780067. The next prime is 67780109. The reversal of 67780076 is 67008776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7346 + ... + 13766.

It is an arithmetic number, because the mean of its divisors is an integer number (3146780).

Almost surely, 267780076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67780076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75522720).

67780076 is an abundant number, since it is smaller than the sum of its proper divisors (83265364).

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

67780076 is a wasteful number, since it uses less digits than its factorization.

67780076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474 (or 6472 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 67780076 is about 8232.8656007492. The cubic root of 67780076 is about 407.7250085335.

The spelling of 67780076 in words is "sixty-seven million, seven hundred eighty thousand, seventy-six".

Divisors: 1 2 4 7 13 14 26 28 29 52 58 91 116 182 203 364 377 406 754 812 1508 2639 5278 6421 10556 12842 25684 44947 83473 89894 166946 179788 186209 333892 372418 584311 744836 1168622 1303463 2337244 2420717 2606926 4841434 5213852 9682868 16945019 33890038 67780076