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20087427730 = 252837098031
BaseRepresentation
bin10010101101010011…
…011101001010010010
31220211221001001112211
4102231103131022102
5312114340141410
613121131142334
71310533214146
oct225523351222
956757031484
1020087427730
118578913847
123a872a49aa
131b81838b16
14d87b63226
157c878a68a
hex4ad4dd292

20087427730 has 16 divisors (see below), whose sum is σ = 36285139584. Its totient is φ = 8006577840.

The previous prime is 20087427721. The next prime is 20087427751. The reversal of 20087427730 is 3772478002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3546186 + ... + 3551845.

It is an arithmetic number, because the mean of its divisors is an integer number (2267821224).

Almost surely, 220087427730 is an apocalyptic number.

20087427730 is a deficient number, since it is larger than the sum of its proper divisors (16197711854).

20087427730 is a wasteful number, since it uses less digits than its factorization.

20087427730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7098321.

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 20087427730 in words is "twenty billion, eighty-seven million, four hundred twenty-seven thousand, seven hundred thirty".

Divisors: 1 2 5 10 283 566 1415 2830 7098031 14196062 35490155 70980310 2008742773 4017485546 10043713865 20087427730