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28895706 = 2327534327
BaseRepresentation
bin110111000111…
…0100111011010
32000101001110100
41232032213122
524344130311
62511200230
7500416020
oct156164732
960331410
1028895706
1115346854
129816076
135ca9468
143ba2710
15280ba56
hex1b8e9da

28895706 has 48 divisors (see below), whose sum is σ = 72918144. Its totient is φ = 8098272.

The previous prime is 28895701. The next prime is 28895707. The reversal of 28895706 is 60759882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28895701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4515 + ... + 8841.

It is an arithmetic number, because the mean of its divisors is an integer number (1519128).

Almost surely, 228895706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28895706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36459072).

28895706 is an abundant number, since it is smaller than the sum of its proper divisors (44022438).

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

28895706 is a wasteful number, since it uses less digits than its factorization.

28895706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395 (or 4392 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28895706 is about 5375.4726303833. The cubic root of 28895706 is about 306.8629364778.

The spelling of 28895706 in words is "twenty-eight million, eight hundred ninety-five thousand, seven hundred six".

Divisors: 1 2 3 6 7 9 14 18 21 42 53 63 106 126 159 318 371 477 742 954 1113 2226 3339 4327 6678 8654 12981 25962 30289 38943 60578 77886 90867 181734 229331 272601 458662 545202 687993 1375986 1605317 2063979 3210634 4127958 4815951 9631902 14447853 28895706