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81084224830 = 2571158346069
BaseRepresentation
bin100101110000011111…
…1110001010100111110
321202021220021101212011
41023200333301110332
52312030030143310
6101125524201434
75600225352640
oct1134077612476
9252256241764
1081084224830
1131429a27264
121386ab3927a
13785295137b
143cd2b6c890
15219878a78a
hex12e0ff153e

81084224830 has 16 divisors (see below), whose sum is σ = 166801834080. Its totient is φ = 27800305632.

The previous prime is 81084224803. The next prime is 81084224843. The reversal of 81084224830 is 3842248018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579172965 + ... + 579173104.

It is an arithmetic number, because the mean of its divisors is an integer number (10425114630).

Almost surely, 281084224830 is an apocalyptic number.

81084224830 is an abundant number, since it is smaller than the sum of its proper divisors (85717609250).

81084224830 is a wasteful number, since it uses less digits than its factorization.

81084224830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158346083.

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 81084224830 in words is "eighty-one billion, eighty-four million, two hundred twenty-four thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 1158346069 2316692138 5791730345 8108422483 11583460690 16216844966 40542112415 81084224830