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85032560 = 2451062907
BaseRepresentation
bin1010001000101…
…11111001110000
312221000002202002
411010113321300
5133232020220
612234313132
72051523224
oct504277160
9187002662
1085032560
1143aa9248
12245887a8
1314802c32
14b416784
1576e9c75
hex5117e70

85032560 has 20 divisors (see below), whose sum is σ = 197700888. Its totient is φ = 34012992.

The previous prime is 85032557. The next prime is 85032569. The reversal of 85032560 is 6523058.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85032569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531374 + ... + 531533.

Almost surely, 285032560 is an apocalyptic number.

85032560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85032560 is an abundant number, since it is smaller than the sum of its proper divisors (112668328).

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

85032560 is a wasteful number, since it uses less digits than its factorization.

85032560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062920 (or 1062914 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 85032560 is about 9221.3101021493. The cubic root of 85032560 is about 439.7391015289.

The spelling of 85032560 in words is "eighty-five million, thirty-two thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1062907 2125814 4251628 5314535 8503256 10629070 17006512 21258140 42516280 85032560