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8993019028 = 2273118157241
BaseRepresentation
bin10000110000000011…
…01001010010010100
3212012201221200220211
420120001221102110
5121404203102103
64044211335204
7435566254240
oct103001512224
925181850824
108993019028
1138a5363334
1218ab8b1504
13b041a7946
14614519420
1537979d36d
hex218069494

8993019028 has 48 divisors (see below), whose sum is σ = 18669134848. Its totient is φ = 3709152000.

The previous prime is 8993019019. The next prime is 8993019137. The reversal of 8993019028 is 8209103998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128488 + ... + 185728.

Almost surely, 28993019028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8993019028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9334567424).

8993019028 is an abundant number, since it is smaller than the sum of its proper divisors (9676115820).

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

8993019028 is a wasteful number, since it uses less digits than its factorization.

8993019028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57464 (or 57462 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 8993019028 is about 94831.5297145417. The cubic root of 8993019028 is about 2079.5458688661.

The spelling of 8993019028 in words is "eight billion, nine hundred ninety-three million, nineteen thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 31 62 124 181 217 362 434 724 868 1267 2534 5068 5611 11222 22444 39277 57241 78554 114482 157108 228964 400687 801374 1602748 1774471 3548942 7097884 10360621 12421297 20721242 24842594 41442484 49685188 72524347 145048694 290097388 321179251 642358502 1284717004 2248254757 4496509514 8993019028