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28895763 = 3131973761
BaseRepresentation
bin110111000111…
…0101000010011
32000101001112110
41232032220103
524344131023
62511200403
7500416131
oct156165023
960331473
1028895763
11153468a6
129816103
135ca94b0
143ba2751
15280ba93
hex1b8ea13

28895763 has 16 divisors (see below), whose sum is σ = 41713056. Its totient is φ = 17687040.

The previous prime is 28895753. The next prime is 28895771. The reversal of 28895763 is 36759882.

It is not a de Polignac number, because 28895763 - 28 = 28895507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28895743) 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 15 ways as a sum of consecutive naturals, for example, 5803 + ... + 9563.

It is an arithmetic number, because the mean of its divisors is an integer number (2607066).

Almost surely, 228895763 is an apocalyptic number.

28895763 is a deficient number, since it is larger than the sum of its proper divisors (12817293).

28895763 is a wasteful number, since it uses less digits than its factorization.

28895763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974.

The product of its digits is 725760, while the sum is 48.

The square root of 28895763 is about 5375.4779322401. The cubic root of 28895763 is about 306.8631382515.

It can be divided in two parts, 28 and 895763, that added together give a triangular number (895791 = T1338).

The spelling of 28895763 in words is "twenty-eight million, eight hundred ninety-five thousand, seven hundred sixty-three".

Divisors: 1 3 13 39 197 591 2561 3761 7683 11283 48893 146679 740917 2222751 9631921 28895763