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28438608048 = 243691857411
BaseRepresentation
bin11010011111000100…
…101011100010110000
32201101221020222021120
4122133010223202300
5431220240424143
621021534022240
72024510115504
oct323704534260
981357228246
1028438608048
1111073942164
125618047980
1328b2a59436
14153ad24304
15b16a04383
hex69f12b8b0

28438608048 has 40 divisors (see below), whose sum is σ = 73572808896. Its totient is φ = 9465806400.

The previous prime is 28438608047. The next prime is 28438608071. The reversal of 28438608048 is 84080683482.

It is not an unprimeable number, because it can be changed into a prime (28438608047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395538 + ... + 461873.

Almost surely, 228438608048 is an apocalyptic number.

It is an amenable number.

28438608048 is an abundant number, since it is smaller than the sum of its proper divisors (45134200848).

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

28438608048 is a wasteful number, since it uses less digits than its factorization.

28438608048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858113 (or 858107 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 51.

The spelling of 28438608048 in words is "twenty-eight billion, four hundred thirty-eight million, six hundred eight thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 691 1382 2073 2764 4146 5528 8292 11056 16584 33168 857411 1714822 2572233 3429644 5144466 6859288 10288932 13718576 20577864 41155728 592471001 1184942002 1777413003 2369884004 3554826006 4739768008 7109652012 9479536016 14219304024 28438608048