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381098930 = 25199191507
BaseRepresentation
bin10110101101110…
…001101110110010
3222120002211110012
4112231301232302
51240030131210
6101452134522
712305200412
oct2655615662
9876084405
10381098930
111861362a3
12a7767442
1360c54434
1438884642
15236cd305
hex16b71bb2

381098930 has 16 divisors (see below), whose sum is σ = 689428800. Its totient is φ = 151672752.

The previous prime is 381098917. The next prime is 381098951. The reversal of 381098930 is 39890183.

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 7 ways as a sum of consecutive naturals, for example, 93764 + ... + 97743.

It is an arithmetic number, because the mean of its divisors is an integer number (43089300).

Almost surely, 2381098930 is an apocalyptic number.

381098930 is a deficient number, since it is larger than the sum of its proper divisors (308329870).

381098930 is a wasteful number, since it uses less digits than its factorization.

381098930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191713.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 381098930 is about 19521.7553001773. The cubic root of 381098930 is about 725.0131935768.

The spelling of 381098930 in words is "three hundred eighty-one million, ninety-eight thousand, nine hundred thirty".

Divisors: 1 2 5 10 199 398 995 1990 191507 383014 957535 1915070 38109893 76219786 190549465 381098930