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67068768 = 2531361881
BaseRepresentation
bin1111111111011…
…0001101100000
311200012110001110
43333312031200
5114132200033
610353303320
71443034524
oct377661540
9150173043
1067068768
1134949838
121a564b40
1310b83580
148c9bd84
155d4c363
hex3ff6360

67068768 has 96 divisors (see below), whose sum is σ = 192925152. Its totient is φ = 20275200.

The previous prime is 67068737. The next prime is 67068787. The reversal of 67068768 is 86786076.

67068768 = T347 + T348 + ... + T762.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75688 + ... + 76568.

It is an arithmetic number, because the mean of its divisors is an integer number (2009637).

Almost surely, 267068768 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 67068768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96462576).

67068768 is an abundant number, since it is smaller than the sum of its proper divisors (125856384).

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

67068768 is a wasteful number, since it uses less digits than its factorization.

67068768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 67068768 is about 8189.5523687196. The cubic root of 67068768 is about 406.2937200127.

The spelling of 67068768 in words is "sixty-seven million, sixty-eight thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 61 78 96 104 122 156 183 208 244 312 366 416 488 624 732 793 881 976 1248 1464 1586 1762 1952 2379 2643 2928 3172 3524 4758 5286 5856 6344 7048 9516 10572 11453 12688 14096 19032 21144 22906 25376 28192 34359 38064 42288 45812 53741 68718 76128 84576 91624 107482 137436 161223 183248 214964 274872 322446 366496 429928 549744 644892 698633 859856 1099488 1289784 1397266 1719712 2095899 2579568 2794532 4191798 5159136 5589064 8383596 11178128 16767192 22356256 33534384 67068768