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28650366 = 2321983773
BaseRepresentation
bin110110101001…
…0101101111110
31222220120220200
41231102231332
524313302431
62502024330
7465344523
oct155225576
958816820
1028650366
1115199498
1297180a6
135c218a4
143b3b14a
1527adee6
hex1b52b7e

28650366 has 24 divisors (see below), whose sum is σ = 65343720. Its totient is φ = 9047376.

The previous prime is 28650361. The next prime is 28650397. The reversal of 28650366 is 66305682.

It is a self number, because there is not a number n which added to its sum of digits gives 28650366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28650361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41545 + ... + 42228.

It is an arithmetic number, because the mean of its divisors is an integer number (2722655).

Almost surely, 228650366 is an apocalyptic number.

28650366 is an abundant number, since it is smaller than the sum of its proper divisors (36693354).

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

28650366 is a wasteful number, since it uses less digits than its factorization.

28650366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83800 (or 83797 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 28650366 is about 5352.6036655071. The cubic root of 28650366 is about 305.9919900505.

The spelling of 28650366 in words is "twenty-eight million, six hundred fifty thousand, three hundred sixty-six".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 83773 167546 251319 502638 753957 1507914 1591687 3183374 4775061 9550122 14325183 28650366