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28828395740 = 22512421116047
BaseRepresentation
bin11010110110010011…
…100110100011011100
32202102002201020110202
4122312103212203130
5433020032130430
621124340323032
72040252214664
oct326623464334
982362636422
1028828395740
1111253972451
1257066a3478
132945733641
1415769cb1a4
15b3ad4bd45
hex6b64e68dc

28828395740 has 24 divisors (see below), whose sum is σ = 60545026752. Its totient is φ = 11530330560.

The previous prime is 28828395731. The next prime is 28828395749. The reversal of 28828395740 is 4759382882.

It is an interprime number because it is at equal distance from previous prime (28828395731) and next prime (28828395749).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28828395749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190397 + ... + 306443.

It is an arithmetic number, because the mean of its divisors is an integer number (2522709448).

Almost surely, 228828395740 is an apocalyptic number.

28828395740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28828395740 is an abundant number, since it is smaller than the sum of its proper divisors (31716631012).

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

28828395740 is a wasteful number, since it uses less digits than its factorization.

28828395740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128477 (or 128475 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 28828395740 in words is "twenty-eight billion, eight hundred twenty-eight million, three hundred ninety-five thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 12421 24842 49684 62105 116047 124210 232094 248420 464188 580235 1160470 2320940 1441419787 2882839574 5765679148 7207098935 14414197870 28828395740