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28014486 = 2322920389
BaseRepresentation
bin110101011011…
…1011110010110
31221201021122120
41222313132112
524132430421
62440240410
7460055613
oct152673626
957637576
1028014486
11148a4775
129470106
135a5b326
143a1350a
1526d58c6
hex1ab7796

28014486 has 16 divisors (see below), whose sum is σ = 56276400. Its totient is φ = 9296928.

The previous prime is 28014479. The next prime is 28014499. The reversal of 28014486 is 68441082.

It is a super-2 number, since 2×280144862 = 1569622851688392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8821 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (3517275).

Almost surely, 228014486 is an apocalyptic number.

28014486 is an abundant number, since it is smaller than the sum of its proper divisors (28261914).

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

28014486 is a wasteful number, since it uses less digits than its factorization.

28014486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20623.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28014486 is about 5292.8712434746. The cubic root of 28014486 is about 303.7112548592.

The spelling of 28014486 in words is "twenty-eight million, fourteen thousand, four hundred eighty-six".

Divisors: 1 2 3 6 229 458 687 1374 20389 40778 61167 122334 4669081 9338162 14007243 28014486