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416666680 = 23512782021
BaseRepresentation
bin11000110101011…
…101010000111000
31002001000212020021
4120311131100320
51323131313210
6105202340224
713216415443
oct3065352070
91061025207
10416666680
111a4219931
12b765a674
1368428741
143d4a265a
15268a6bda
hex18d5d438

416666680 has 32 divisors (see below), whose sum is σ = 944893440. Its totient is φ = 165352320.

The previous prime is 416666633. The next prime is 416666681. The reversal of 416666680 is 86666614.

It is a super-2 number, since 2×4166666802 = 347222244444444800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416666681) 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, 35931 + ... + 46090.

It is an arithmetic number, because the mean of its divisors is an integer number (29527920).

Almost surely, 2416666680 is an apocalyptic number.

416666680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

416666680 is an abundant number, since it is smaller than the sum of its proper divisors (528226760).

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

416666680 is a wasteful number, since it uses less digits than its factorization.

416666680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82159 (or 82155 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 416666680 is about 20412.4148497918. The cubic root of 416666680 is about 746.9007990598.

The spelling of 416666680 in words is "four hundred sixteen million, six hundred sixty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 127 254 508 635 1016 1270 2540 5080 82021 164042 328084 410105 656168 820210 1640420 3280840 10416667 20833334 41666668 52083335 83333336 104166670 208333340 416666680