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381030084 = 223210699901
BaseRepresentation
bin10110101101100…
…000111011000100
3222112222100000100
4112231200323010
51240020430314
6101450444100
712304462611
oct2655407304
9875870010
10381030084
111860995a6
12a7733630
1360c2bcb6
1438867508
15236b7c09
hex16b60ec4

381030084 has 36 divisors (see below), whose sum is σ = 964157740. Its totient is φ = 126878400.

The previous prime is 381030079. The next prime is 381030109. The reversal of 381030084 is 480030183.

It can be written as a sum of positive squares in 2 ways, for example, as 290361600 + 90668484 = 17040^2 + 9522^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33534 + ... + 43434.

Almost surely, 2381030084 is an apocalyptic number.

It is an amenable number.

381030084 is an abundant number, since it is smaller than the sum of its proper divisors (583127656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381030084 is a wasteful number, since it uses less digits than its factorization.

381030084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10980 (or 10975 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 381030084 is about 19519.9919057360. The cubic root of 381030084 is about 724.9695327664.

Subtracting 381030084 from its reverse (480030183), we obtain a palindrome (99000099).

The spelling of 381030084 in words is "three hundred eighty-one million, thirty thousand, eighty-four".

Divisors: 1 2 3 4 6 9 12 18 36 1069 2138 3207 4276 6414 9621 9901 12828 19242 19802 29703 38484 39604 59406 89109 118812 178218 356436 10584169 21168338 31752507 42336676 63505014 95257521 127010028 190515042 381030084