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28448084 = 2278312241
BaseRepresentation
bin110110010000…
…1010101010100
31222112022102202
41230201111110
524240314314
62453424032
7463543010
oct154412524
958468382
1028448084
1115070515
12963b018
135b807b2
143ac7540
15276e0de
hex1b21554

28448084 has 24 divisors (see below), whose sum is σ = 57586368. Its totient is φ = 12044160.

The previous prime is 28448083. The next prime is 28448099. The reversal of 28448084 is 48084482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3797 + ... + 8444.

It is an arithmetic number, because the mean of its divisors is an integer number (2399432).

Almost surely, 228448084 is an apocalyptic number.

It is an amenable number.

28448084 is an abundant number, since it is smaller than the sum of its proper divisors (29138284).

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

28448084 is a wasteful number, since it uses less digits than its factorization.

28448084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12335 (or 12333 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 38.

The square root of 28448084 is about 5333.6745307527. The cubic root of 28448084 is about 305.2701503269.

The spelling of 28448084 in words is "twenty-eight million, four hundred forty-eight thousand, eighty-four".

Divisors: 1 2 4 7 14 28 83 166 332 581 1162 2324 12241 24482 48964 85687 171374 342748 1016003 2032006 4064012 7112021 14224042 28448084