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38000831 = 1117203213
BaseRepresentation
bin1001000011110…
…1100010111111
32122111122100012
42100331202333
534212011311
63434253435
7641000411
oct220754277
978448305
1038000831
111a4a5650
121088727b
137b468cb
1450929b1
15350978b
hex243d8bf

38000831 has 8 divisors (see below), whose sum is σ = 43894224. Its totient is φ = 32513920.

The previous prime is 38000821. The next prime is 38000849. The reversal of 38000831 is 13800083.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38000831 is a prime.

It is a super-2 number, since 2×380008312 = 2888126313381122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38000797 and 38000806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38000801) 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, 101420 + ... + 101793.

It is an arithmetic number, because the mean of its divisors is an integer number (5486778).

Almost surely, 238000831 is an apocalyptic number.

38000831 is a deficient number, since it is larger than the sum of its proper divisors (5893393).

38000831 is a wasteful number, since it uses less digits than its factorization.

38000831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203241.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 38000831 is about 6164.4814056010. The cubic root of 38000831 is about 336.1999913652.

The spelling of 38000831 in words is "thirty-eight million, eight hundred thirty-one", and thus it is an aban number.

Divisors: 1 11 17 187 203213 2235343 3454621 38000831