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85206680 = 23513163859
BaseRepresentation
bin1010001010000…
…10011010011000
312221022221120222
411011002122120
5133303103210
612242135212
72053146656
oct505023230
9187287528
1085206680
1144108049
1224651508
1314864270
14b45ddd6
157731655
hex5142698

85206680 has 32 divisors (see below), whose sum is σ = 206463600. Its totient is φ = 31460736.

The previous prime is 85206661. The next prime is 85206683. The reversal of 85206680 is 8660258.

It is a self number, because there is not a number n which added to its sum of digits gives 85206680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85206683) 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, 81410 + ... + 82449.

Almost surely, 285206680 is an apocalyptic number.

It is an amenable number.

85206680 is an abundant number, since it is smaller than the sum of its proper divisors (121256920).

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

85206680 is a wasteful number, since it uses less digits than its factorization.

85206680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163883 (or 163879 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 85206680 is about 9230.7464486898. The cubic root of 85206680 is about 440.0390461217.

The spelling of 85206680 in words is "eighty-five million, two hundred six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 163859 327718 655436 819295 1310872 1638590 2130167 3277180 4260334 6554360 8520668 10650835 17041336 21301670 42603340 85206680