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381142795 = 511291971213
BaseRepresentation
bin10110101101111…
…100011100001011
3222120012001121211
4112231330130023
51240033032140
6101453113551
712305442325
oct2655743413
9876161554
10381142795
11186166250
12a77888b7
1360c6b3a7
1438896615
15236db2ea
hex16b7c70b

381142795 has 32 divisors (see below), whose sum is σ = 519203520. Its totient is φ = 266058240.

The previous prime is 381142759. The next prime is 381142829. The reversal of 381142795 is 597241183.

It is not a de Polignac number, because 381142795 - 29 = 381142283 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313609 + ... + 314821.

It is an arithmetic number, because the mean of its divisors is an integer number (16225110).

Almost surely, 2381142795 is an apocalyptic number.

381142795 is a deficient number, since it is larger than the sum of its proper divisors (138060725).

381142795 is a wasteful number, since it uses less digits than its factorization.

381142795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455.

The product of its digits is 60480, while the sum is 40.

The square root of 381142795 is about 19522.8787580111. The cubic root of 381142795 is about 725.0410091746.

The spelling of 381142795 in words is "three hundred eighty-one million, one hundred forty-two thousand, seven hundred ninety-five".

Divisors: 1 5 11 29 55 145 197 319 985 1213 1595 2167 5713 6065 10835 13343 28565 35177 62843 66715 175885 238961 314215 386947 1194805 1934735 2628571 6929869 13142855 34649345 76228559 381142795