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85069810 = 2571215283
BaseRepresentation
bin1010001001000…
…00111111110010
312221001222211201
411010200333302
5133234213220
612235201414
72052036640
oct504407762
9187058751
1085069810
1144024231
12245a626a
1314816b87
14b426190
157705d0a
hex5120ff2

85069810 has 16 divisors (see below), whose sum is σ = 175000896. Its totient is φ = 29166768.

The previous prime is 85069769. The next prime is 85069811. The reversal of 85069810 is 1896058.

It is a super-2 number, since 2×850698102 = 14473745146872200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85069810.

It is not an unprimeable number, because it can be changed into a prime (85069811) 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 7 ways as a sum of consecutive naturals, for example, 607572 + ... + 607711.

It is an arithmetic number, because the mean of its divisors is an integer number (10937556).

Almost surely, 285069810 is an apocalyptic number.

85069810 is an abundant number, since it is smaller than the sum of its proper divisors (89931086).

85069810 is a wasteful number, since it uses less digits than its factorization.

85069810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215297.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 85069810 is about 9223.3296590765. The cubic root of 85069810 is about 439.8033039561.

The spelling of 85069810 in words is "eighty-five million, sixty-nine thousand, eight hundred ten".

Divisors: 1 2 5 7 10 14 35 70 1215283 2430566 6076415 8506981 12152830 17013962 42534905 85069810