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28048199 = 1912131217
BaseRepresentation
bin110101011111…
…1101101000111
31221202222220012
41222333231013
524140020244
62441100435
7460256114
oct152775507
957688805
1028048199
1114918033
12948771b
135a7078a
143a2190b
1526e089e
hex1abfb47

28048199 has 8 divisors (see below), whose sum is σ = 29573040. Its totient is φ = 26528256.

The previous prime is 28048129. The next prime is 28048217. The reversal of 28048199 is 99184082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28048199 - 212 = 28044103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28048129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22439 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (3696630).

Almost surely, 228048199 is an apocalyptic number.

28048199 is a deficient number, since it is larger than the sum of its proper divisors (1524841).

28048199 is a wasteful number, since it uses less digits than its factorization.

28048199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 28048199 is about 5296.0550412548. The cubic root of 28048199 is about 303.8330360575.

The spelling of 28048199 in words is "twenty-eight million, forty-eight thousand, one hundred ninety-nine".

Divisors: 1 19 1213 1217 23047 23123 1476221 28048199