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38678143 = 713142179
BaseRepresentation
bin1001001110001…
…0111001111111
32200210001102211
42103202321333
534400200033
63501001251
7646521160
oct223427177
980701384
1038678143
111a918509
1210b53227
138022c9a
1451cb767
1535e02cd
hex24e2e7f

38678143 has 8 divisors (see below), whose sum is σ = 44542080. Its totient is φ = 32898840.

The previous prime is 38678119. The next prime is 38678147. The reversal of 38678143 is 34187683.

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-38678143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38678096 and 38678105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678147) 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, 20173 + ... + 22006.

It is an arithmetic number, because the mean of its divisors is an integer number (5567760).

Almost surely, 238678143 is an apocalyptic number.

38678143 is a deficient number, since it is larger than the sum of its proper divisors (5863937).

38678143 is a wasteful number, since it uses less digits than its factorization.

38678143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42317.

The product of its digits is 96768, while the sum is 40.

The square root of 38678143 is about 6219.1754276592. The cubic root of 38678143 is about 338.1856728772.

The spelling of 38678143 in words is "thirty-eight million, six hundred seventy-eight thousand, one hundred forty-three".

Divisors: 1 7 131 917 42179 295253 5525449 38678143