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85246020 = 22345101521
BaseRepresentation
bin1010001010011…
…00000001000100
312221101221120000
411011030001010
5133310333040
612243041300
72053402446
oct505140104
9187357500
1085246020
1144134662
1224670230
1314879142
14b470496
15773d130
hex514c044

85246020 has 120 divisors (see below), whose sum is σ = 270586008. Its totient is φ = 22464000.

The previous prime is 85246019. The next prime is 85246061. The reversal of 85246020 is 2064258.

85246020 is a `hidden beast` number, since 8 + 52 + 4 + 602 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19927296 + 65318724 = 4464^2 + 8082^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 163360 + ... + 163880.

Almost surely, 285246020 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 85246020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135293004).

85246020 is an abundant number, since it is smaller than the sum of its proper divisors (185339988).

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

85246020 is a wasteful number, since it uses less digits than its factorization.

85246020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 85246020 is about 9232.8771247104. The cubic root of 85246020 is about 440.1067578417.

The spelling of 85246020 in words is "eighty-five million, two hundred forty-six thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 101 108 135 162 180 202 270 303 324 404 405 505 521 540 606 810 909 1010 1042 1212 1515 1563 1620 1818 2020 2084 2605 2727 3030 3126 3636 4545 4689 5210 5454 6060 6252 7815 8181 9090 9378 10420 10908 13635 14067 15630 16362 18180 18756 23445 27270 28134 31260 32724 40905 42201 46890 52621 54540 56268 70335 81810 84402 93780 105242 140670 157863 163620 168804 210484 211005 263105 281340 315726 422010 473589 526210 631452 789315 844020 947178 1052420 1420767 1578630 1894356 2367945 2841534 3157260 4262301 4735890 5683068 7103835 8524602 9471780 14207670 17049204 21311505 28415340 42623010 85246020