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28014680 = 235700367
BaseRepresentation
bin110101011011…
…1100001011000
31221201021220202
41222313201120
524132432210
62440241332
7460056311
oct152674130
957637822
1028014680
11148a4931
129470248
135a5b445
143a13608
1526d59a5
hex1ab7858

28014680 has 16 divisors (see below), whose sum is σ = 63033120. Its totient is φ = 11205856.

The previous prime is 28014659. The next prime is 28014689. The reversal of 28014680 is 8641082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28014689) 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 3 ways as a sum of consecutive naturals, for example, 350144 + ... + 350223.

It is an arithmetic number, because the mean of its divisors is an integer number (3939570).

Almost surely, 228014680 is an apocalyptic number.

28014680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28014680 is an abundant number, since it is smaller than the sum of its proper divisors (35018440).

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

28014680 is a wasteful number, since it uses less digits than its factorization.

28014680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700378 (or 700374 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28014680 is about 5292.8895699797. The cubic root of 28014680 is about 303.7119559233.

The spelling of 28014680 in words is "twenty-eight million, fourteen thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 700367 1400734 2801468 3501835 5602936 7003670 14007340 28014680