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85230012 = 2237320707
BaseRepresentation
bin1010001010010…
…00000110111100
312221101010121010
411011020012330
5133304330022
612242435220
72053305000
oct505100674
9187333533
1085230012
114412362a
1224662b10
1314871a7a
14b468700
15773850c
hex51481bc

85230012 has 48 divisors (see below), whose sum is σ = 231929600. Its totient is φ = 24350256.

The previous prime is 85229983. The next prime is 85230023. The reversal of 85230012 is 21003258.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6238 + ... + 14469.

Almost surely, 285230012 is an apocalyptic number.

It is an amenable number.

85230012 is an abundant number, since it is smaller than the sum of its proper divisors (146699588).

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

85230012 is a wasteful number, since it uses less digits than its factorization.

85230012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20735 (or 20719 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 85230012 is about 9232.0101819701. The cubic root of 85230012 is about 440.0792075035.

The spelling of 85230012 in words is "eighty-five million, two hundred thirty thousand, twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 343 588 686 1029 1372 2058 4116 20707 41414 62121 82828 124242 144949 248484 289898 434847 579796 869694 1014643 1739388 2029286 3043929 4058572 6087858 7102501 12175716 14205002 21307503 28410004 42615006 85230012