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38930390005 = 5131931522583
BaseRepresentation
bin100100010000011011…
…101001101111110101
310201111010101201102111
4210100123221233311
51114212134440010
625515005211021
72545505566213
oct442033515765
9121433351374
1038930390005
1115568210241
127665860a71
1338955b2240
141c544ddcb3
15102cb5558a
hex9106e9bf5

38930390005 has 16 divisors (see below), whose sum is σ = 52957941120. Its totient is φ = 27235510848.

The previous prime is 38930390003. The next prime is 38930390039. The reversal of 38930390005 is 50009303983.

It is not a de Polignac number, because 38930390005 - 21 = 38930390003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38930390005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38930390003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15760057 + ... + 15762526.

It is an arithmetic number, because the mean of its divisors is an integer number (3309871320).

Almost surely, 238930390005 is an apocalyptic number.

It is an amenable number.

38930390005 is a deficient number, since it is larger than the sum of its proper divisors (14027551115).

38930390005 is a wasteful number, since it uses less digits than its factorization.

38930390005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31522620.

The product of its (nonzero) digits is 87480, while the sum is 40.

Adding to 38930390005 its reverse (50009303983), we get a palindrome (88939693988).

The spelling of 38930390005 in words is "thirty-eight billion, nine hundred thirty million, three hundred ninety thousand, five".

Divisors: 1 5 13 19 65 95 247 1235 31522583 157612915 409793579 598929077 2048967895 2994645385 7786078001 38930390005