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20395088 = 247182099
BaseRepresentation
bin100110111001…
…1010001010000
31102101011210122
41031303101100
520210120323
62005045412
7335232620
oct115632120
942334718
1020395088
111057014a
1269b6868
1342c11cc
1429cc880
151bccec8
hex1373450

20395088 has 20 divisors (see below), whose sum is σ = 45160800. Its totient is φ = 8740704.

The previous prime is 20395079. The next prime is 20395093. The reversal of 20395088 is 88059302.

It is a super-2 number, since 2×203950882 = 831919229055488, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 90938 + ... + 91161.

It is an arithmetic number, because the mean of its divisors is an integer number (2258040).

Almost surely, 220395088 is an apocalyptic number.

20395088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20395088 is an abundant number, since it is smaller than the sum of its proper divisors (24765712).

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

20395088 is a wasteful number, since it uses less digits than its factorization.

20395088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182114 (or 182108 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 20395088 is about 4516.0921159781. The cubic root of 20395088 is about 273.2175092586.

The spelling of 20395088 in words is "twenty million, three hundred ninety-five thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 182099 364198 728396 1274693 1456792 2549386 2913584 5098772 10197544 20395088