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28819077119 = 732331117841
BaseRepresentation
bin11010110101110000…
…000011011111111111
32202101110011210201122
4122311300003133333
5433010140431434
621123404501155
72040110054000
oct326560033777
982343153648
1028819077119
1111249688208
12570354a7bb
13294381cc71
1415756831a7
15b3a10ac2e
hex6b5c037ff

28819077119 has 32 divisors (see below), whose sum is σ = 36201062400. Its totient is φ = 22865673600.

The previous prime is 28819077113. The next prime is 28819077121. The reversal of 28819077119 is 91177091882.

It is not a de Polignac number, because 28819077119 - 24 = 28819077103 is a prime.

It is a super-2 number, since 2×288190771192 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28819077113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185639 + ... + 303479.

It is an arithmetic number, because the mean of its divisors is an integer number (1131283200).

Almost surely, 228819077119 is an apocalyptic number.

28819077119 is a deficient number, since it is larger than the sum of its proper divisors (7381985281).

28819077119 is a wasteful number, since it uses less digits than its factorization.

28819077119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117916 (or 117902 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 53.

The spelling of 28819077119 in words is "twenty-eight billion, eight hundred nineteen million, seventy-seven thousand, one hundred nineteen".

Divisors: 1 7 23 31 49 161 217 343 713 1127 1519 4991 7889 10633 34937 117841 244559 824887 2710343 3653071 5774209 18972401 25571497 40419463 84020633 132806807 179000479 588144431 929647649 1253003353 4117011017 28819077119