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28105027536 = 243585521407
BaseRepresentation
bin11010001011001100…
…001010111111010000
32200112200120022211210
4122023030022333100
5430024341340121
620524500140120
72013316535535
oct321314127720
980480508753
1028105027536
1110a12612193
125544397640
13285b901a11
1415088ccd8c
15ae75b0876
hex68b30afd0

28105027536 has 20 divisors (see below), whose sum is σ = 72604654592. Its totient is φ = 9368342496.

The previous prime is 28105027529. The next prime is 28105027571. The reversal of 28105027536 is 63572050182.

It is a junction number, because it is equal to n+sod(n) for n = 28105027494 and 28105027503.

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 3 ways as a sum of consecutive naturals, for example, 292760656 + ... + 292760751.

Almost surely, 228105027536 is an apocalyptic number.

It is an amenable number.

28105027536 is an abundant number, since it is smaller than the sum of its proper divisors (44499627056).

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

28105027536 is a wasteful number, since it uses less digits than its factorization.

28105027536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585521418 (or 585521412 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 28105027536 in words is "twenty-eight billion, one hundred five million, twenty-seven thousand, five hundred thirty-six".

Divisors: 1 2 3 4 6 8 12 16 24 48 585521407 1171042814 1756564221 2342085628 3513128442 4684171256 7026256884 9368342512 14052513768 28105027536