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28887100249 = 710973761831
BaseRepresentation
bin11010111001110011…
…100010101101011001
32202120012011201220211
4122321303202231121
5433130044201444
621134234451121
72041564205110
oct327163425531
982505151824
1028887100249
1111284018a77
125722293aa1
132954948a37
14158070cc77
15b41095c34
hex6b9ce2b59

28887100249 has 8 divisors (see below), whose sum is σ = 33043932288. Its totient is φ = 24737794080.

The previous prime is 28887100237. The next prime is 28887100273. The reversal of 28887100249 is 94200178882.

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 28887100249 - 213 = 28887092057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28887100279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873237 + ... + 1888594.

It is an arithmetic number, because the mean of its divisors is an integer number (4130491536).

Almost surely, 228887100249 is an apocalyptic number.

It is an amenable number.

28887100249 is a deficient number, since it is larger than the sum of its proper divisors (4156832039).

28887100249 is a wasteful number, since it uses less digits than its factorization.

28887100249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762935.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 28887100249 in words is "twenty-eight billion, eight hundred eighty-seven million, one hundred thousand, two hundred forty-nine".

Divisors: 1 7 1097 7679 3761831 26332817 4126728607 28887100249