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28811350876 = 22711791184093
BaseRepresentation
bin11010110101010010…
…100101001101011100
32202100220122021022111
4122311102211031130
5433001201212001
621122531123404
72036654304340
oct326522451534
982326567274
1028811350876
1111245290390
125700a43564
132942046319
141574631620
15b395d1851
hex6b54a535c

28811350876 has 48 divisors (see below), whose sum is σ = 63656893440. Its totient is φ = 11083101120.

The previous prime is 28811350871. The next prime is 28811350901. The reversal of 28811350876 is 67805311882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28811350871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567715 + ... + 616378.

It is an arithmetic number, because the mean of its divisors is an integer number (1326185280).

Almost surely, 228811350876 is an apocalyptic number.

It is an amenable number.

28811350876 is an abundant number, since it is smaller than the sum of its proper divisors (34845542564).

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

28811350876 is a wasteful number, since it uses less digits than its factorization.

28811350876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184194 (or 1184192 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 28811350876 in words is "twenty-eight billion, eight hundred eleven million, three hundred fifty thousand, eight hundred seventy-six".

Divisors: 1 2 4 7 11 14 22 28 44 77 79 154 158 308 316 553 869 1106 1738 2212 3476 6083 12166 24332 1184093 2368186 4736372 8288651 13025023 16577302 26050046 33154604 52100092 91175161 93543347 182350322 187086694 364700644 374173388 654803429 1028976817 1309606858 2057953634 2619213716 4115907268 7202837719 14405675438 28811350876