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67486380 = 223513312791
BaseRepresentation
bin1000000010111…
…00001010101100
311200222122220120
410001130022230
5114234031010
610410244540
71446424203
oct401341254
9150878816
1067486380
1135104575
121a726750
1310c9b690
148d6a23a
155dd0e70
hex405c2ac

67486380 has 96 divisors (see below), whose sum is σ = 210137088. Its totient is φ = 16070400.

The previous prime is 67486373. The next prime is 67486381. The reversal of 67486380 is 8368476.

It is a super-2 number, since 2×674863802 = 9108822971008800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67486381) 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, 22785 + ... + 25575.

It is an arithmetic number, because the mean of its divisors is an integer number (2188928).

Almost surely, 267486380 is an apocalyptic number.

67486380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67486380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105068544).

67486380 is an abundant number, since it is smaller than the sum of its proper divisors (142650708).

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

67486380 is a wasteful number, since it uses less digits than its factorization.

67486380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 67486380 is about 8215.0094339568. The cubic root of 67486380 is about 407.1352551894.

The spelling of 67486380 in words is "sixty-seven million, four hundred eighty-six thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 31 39 52 60 62 65 78 93 124 130 155 156 186 195 260 310 372 390 403 465 620 780 806 930 1209 1612 1860 2015 2418 2791 4030 4836 5582 6045 8060 8373 11164 12090 13955 16746 24180 27910 33492 36283 41865 55820 72566 83730 86521 108849 145132 167460 173042 181415 217698 259563 346084 362830 432605 435396 519126 544245 725660 865210 1038252 1088490 1124773 1297815 1730420 2176980 2249546 2595630 3374319 4499092 5191260 5623865 6748638 11247730 13497276 16871595 22495460 33743190 67486380