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28076259 = 324138833
BaseRepresentation
bin110101100011…
…0100011100011
31221211102101110
41223012203203
524141420014
62441434403
7460433661
oct153064343
957742343
1028076259
1114937122
12949ba03
135a80493
143a2bc31
1526e8d59
hex1ac68e3

28076259 has 8 divisors (see below), whose sum is σ = 37591312. Its totient is φ = 18639360.

The previous prime is 28076239. The next prime is 28076309. The reversal of 28076259 is 95267082.

It is a happy number.

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

It is not a de Polignac number, because 28076259 - 25 = 28076227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28076239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18694 + ... + 20139.

It is an arithmetic number, because the mean of its divisors is an integer number (4698914).

Almost surely, 228076259 is an apocalyptic number.

28076259 is a deficient number, since it is larger than the sum of its proper divisors (9515053).

28076259 is a wasteful number, since it uses less digits than its factorization.

28076259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39077.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28076259 is about 5298.7035206737. The cubic root of 28076259 is about 303.9343225789.

The spelling of 28076259 in words is "twenty-eight million, seventy-six thousand, two hundred fifty-nine".

Divisors: 1 3 241 723 38833 116499 9358753 28076259