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85115964 = 2238638219
BaseRepresentation
bin1010001001011…
…00010000111100
312221011100011010
411010230100330
5133242202324
612240155220
72052321333
oct504542074
9187140133
1085115964
114405597a
1224608b10
1314831b9b
14b438d1a
157714829
hex512c43c

85115964 has 24 divisors (see below), whose sum is σ = 198858240. Its totient is φ = 28335664.

The previous prime is 85115911. The next prime is 85115969. The reversal of 85115964 is 46951158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85115969) 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 7 ways as a sum of consecutive naturals, for example, 6247 + ... + 14465.

It is an arithmetic number, because the mean of its divisors is an integer number (8285760).

Almost surely, 285115964 is an apocalyptic number.

It is an amenable number.

85115964 is an abundant number, since it is smaller than the sum of its proper divisors (113742276).

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

85115964 is a wasteful number, since it uses less digits than its factorization.

85115964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089 (or 9087 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The square root of 85115964 is about 9225.8313446540. The cubic root of 85115964 is about 439.8828269260.

The spelling of 85115964 in words is "eighty-five million, one hundred fifteen thousand, nine hundred sixty-four".

Divisors: 1 2 3 4 6 12 863 1726 2589 3452 5178 8219 10356 16438 24657 32876 49314 98628 7092997 14185994 21278991 28371988 42557982 85115964