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381144041 = 5316344119
BaseRepresentation
bin10110101101111…
…100101111101001
3222120012010022222
4112231330233221
51240033102131
6101453123425
712305446055
oct2655745751
9876163288
10381144041
11186167183
12a7789575
1360c6bb25
1438896c65
15236db87b
hex16b7cbe9

381144041 has 8 divisors (see below), whose sum is σ = 390726720. Its totient is φ = 371650032.

The previous prime is 381144031. The next prime is 381144059. The reversal of 381144041 is 140441183.

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-381144041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381144041.

It is not an unprimeable number, because it can be changed into a prime (381144011) 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 7 ways as a sum of consecutive naturals, for example, 13421 + ... + 30698.

It is an arithmetic number, because the mean of its divisors is an integer number (48840840).

Almost surely, 2381144041 is an apocalyptic number.

It is an amenable number.

381144041 is a deficient number, since it is larger than the sum of its proper divisors (9582679).

381144041 is a wasteful number, since it uses less digits than its factorization.

381144041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44335.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 381144041 is about 19522.9106692624. The cubic root of 381144041 is about 725.0417992547.

The spelling of 381144041 in words is "three hundred eighty-one million, one hundred forty-four thousand, forty-one".

Divisors: 1 53 163 8639 44119 2338307 7191397 381144041