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381900353 = 5235631297
BaseRepresentation
bin10110110000110…
…101011001000001
3222121121112210112
4112300311121001
51240231302403
6101521241105
712315046052
oct2660653101
9877545715
10381900353
1118663342a
12a7a93195
1361175153
1438a12729
15237da9d8
hex16c35641

381900353 has 8 divisors (see below), whose sum is σ = 383605728. Its totient is φ = 380199744.

The previous prime is 381900331. The next prime is 381900367. The reversal of 381900353 is 353009183.

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

It is a cyclic number.

It is not a de Polignac number, because 381900353 - 226 = 314791489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381900313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293801 + ... + 295097.

It is an arithmetic number, because the mean of its divisors is an integer number (47950716).

Almost surely, 2381900353 is an apocalyptic number.

It is an amenable number.

381900353 is a deficient number, since it is larger than the sum of its proper divisors (1705375).

381900353 is a wasteful number, since it uses less digits than its factorization.

381900353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 381900353 is about 19542.2709274025. The cubic root of 381900353 is about 725.5210542063.

The spelling of 381900353 in words is "three hundred eighty-one million, nine hundred thousand, three hundred fifty-three".

Divisors: 1 523 563 1297 294449 678331 730211 381900353