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85369760 = 2557210889
BaseRepresentation
bin1010001011010…
…10001110100000
312221122020021222
411011222032200
5133323313020
612245434212
72054426300
oct505521640
9187566258
1085369760
1144209623
122470b968
13148c0568
14b4a3600
157764b25
hex516a3a0

85369760 has 72 divisors (see below), whose sum is σ = 234635940. Its totient is φ = 29266944.

The previous prime is 85369747. The next prime is 85369763. The reversal of 85369760 is 6796358.

It can be written as a sum of positive squares in 2 ways, for example, as 73891216 + 11478544 = 8596^2 + 3388^2 .

It is not an unprimeable number, because it can be changed into a prime (85369763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2396 + ... + 13284.

Almost surely, 285369760 is an apocalyptic number.

85369760 is a gapful number since it is divisible by the number (80) 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 85369760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117317970).

85369760 is an abundant number, since it is smaller than the sum of its proper divisors (149266180).

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

85369760 is a wasteful number, since it uses less digits than its factorization.

85369760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10918 (or 10903 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 85369760 is about 9239.5757478360. The cubic root of 85369760 is about 440.3196025051.

The spelling of 85369760 in words is "eighty-five million, three hundred sixty-nine thousand, seven hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 70 80 98 112 140 160 196 224 245 280 392 490 560 784 980 1120 1568 1960 3920 7840 10889 21778 43556 54445 76223 87112 108890 152446 174224 217780 304892 348448 381115 435560 533561 609784 762230 871120 1067122 1219568 1524460 1742240 2134244 2439136 2667805 3048920 4268488 5335610 6097840 8536976 10671220 12195680 17073952 21342440 42684880 85369760