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38806110721 = 729191163107
BaseRepresentation
bin100100001001000001…
…100100001000000001
310201011110112200022001
4210021001210020001
51113433331020341
625454405344001
72542436333020
oct441101441001
9121143480261
1038806110721
1115504046394
127630108001
13387591a5c1
141c41bcc8b7
151021ca6d31
hex909064201

38806110721 has 8 divisors (see below), whose sum is σ = 45879145920. Its totient is φ = 32115401808.

The previous prime is 38806110703. The next prime is 38806110731. The reversal of 38806110721 is 12701160883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38806110721 - 229 = 38269239809 is a prime.

It is a super-2 number, since 2×388061107212 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38806110731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95581351 + ... + 95581756.

It is an arithmetic number, because the mean of its divisors is an integer number (5734893240).

Almost surely, 238806110721 is an apocalyptic number.

It is an amenable number.

38806110721 is a deficient number, since it is larger than the sum of its proper divisors (7073035199).

38806110721 is a wasteful number, since it uses less digits than its factorization.

38806110721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191163143.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 38806110721 in words is "thirty-eight billion, eight hundred six million, one hundred ten thousand, seven hundred twenty-one".

Divisors: 1 7 29 203 191163107 1338141749 5543730103 38806110721