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85105722 = 23131318329
BaseRepresentation
bin1010001001010…
…01110000111010
312221010211002210
411010221300322
5133241340342
612240035550
72052246432
oct504516072
9187124083
1085105722
1144049209
1224602bb6
131482a320
14b4352c2
15771179c
hex5129c3a

85105722 has 32 divisors (see below), whose sum is σ = 184726080. Its totient is φ = 25983360.

The previous prime is 85105721. The next prime is 85105777. The reversal of 85105722 is 22750158.

It is a self number, because there is not a number n which added to its sum of digits gives 85105722.

It is not an unprimeable number, because it can be changed into a prime (85105721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6054 + ... + 14382.

It is an arithmetic number, because the mean of its divisors is an integer number (5772690).

Almost surely, 285105722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85105722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92363040).

85105722 is an abundant number, since it is smaller than the sum of its proper divisors (99620358).

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

85105722 is a wasteful number, since it uses less digits than its factorization.

85105722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 85105722 is about 9225.2762560262. The cubic root of 85105722 is about 439.8651825249.

The spelling of 85105722 in words is "eighty-five million, one hundred five thousand, seven hundred twenty-two".

Divisors: 1 2 3 6 13 26 39 78 131 262 393 786 1703 3406 5109 8329 10218 16658 24987 49974 108277 216554 324831 649662 1091099 2182198 3273297 6546594 14184287 28368574 42552861 85105722