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28460271 = 371971329
BaseRepresentation
bin110110010010…
…0010011101111
31222112221011010
41230210103233
524241212041
62454000303
7463623360
oct154442357
958487133
1028460271
1115079694
129646093
135b861c8
143acbb67
152772a16
hex1b244ef

28460271 has 16 divisors (see below), whose sum is σ = 45651200. Its totient is φ = 15406848.

The previous prime is 28460249. The next prime is 28460317. The reversal of 28460271 is 17206482.

It is not a de Polignac number, because 28460271 - 26 = 28460207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28460231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35266 + ... + 36063.

It is an arithmetic number, because the mean of its divisors is an integer number (2853200).

Almost surely, 228460271 is an apocalyptic number.

28460271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28460271 is a deficient number, since it is larger than the sum of its proper divisors (17190929).

28460271 is a wasteful number, since it uses less digits than its factorization.

28460271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71358.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28460271 is about 5334.8168665850. The cubic root of 28460271 is about 305.3137361116.

The spelling of 28460271 in words is "twenty-eight million, four hundred sixty thousand, two hundred seventy-one".

Divisors: 1 3 7 19 21 57 133 399 71329 213987 499303 1355251 1497909 4065753 9486757 28460271