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215382895028 = 22780916015939
BaseRepresentation
bin1100100010010111010…
…0100010100110110100
3202120221101220201102022
43020211310202212310
512012101010120103
6242540122532312
721363250254320
oct3104564424664
9676841821368
10215382895028
1183386035994
12358ab367098
131740629b022
14a5d30d6980
155908bbe138
hex3225d229b4

215382895028 has 48 divisors (see below), whose sum is σ = 431640316800. Its totient is φ = 92119756800.

The previous prime is 215382894997. The next prime is 215382895033. The reversal of 215382895028 is 820598283512.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36262883 + ... + 36268821.

It is an arithmetic number, because the mean of its divisors is an integer number (8992506600).

Almost surely, 2215382895028 is an apocalyptic number.

215382895028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

215382895028 is an abundant number, since it is smaller than the sum of its proper divisors (216257421772).

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

215382895028 is a wasteful number, since it uses less digits than its factorization.

215382895028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8360 (or 8358 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 215382895028 in words is "two hundred fifteen billion, three hundred eighty-two million, eight hundred ninety-five thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 809 1601 1618 3202 3236 5663 5939 6404 11207 11326 11878 22414 22652 23756 41573 44828 83146 166292 1295209 2590418 4804651 5180836 9066463 9508339 9609302 18132926 19016678 19218604 33632557 36265852 38033356 66558373 67265114 133116746 134530228 266233492 7692246251 15384492502 30768985004 53845723757 107691447514 215382895028