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28735761928533 = 311279161878591
BaseRepresentation
bin1101000100010100100001…
…11000011101000101010101
310202202010000122201111122120
412202022100320131011111
512231301320023203113
6141041005441450153
76024042653161032
oct642122070350525
9122663018644576
1028735761928533
11917984a518100
123281224640959
131305a0337b88a
14714b655a6389
1534c73a78aa23
hex1a2290e1d155

28735761928533 has 12 divisors (see below), whose sum is σ = 42114119410944. Its totient is φ = 17415613289800.

The previous prime is 28735761928481. The next prime is 28735761928553. The reversal of 28735761928533 is 33582916753782.

It is not a de Polignac number, because 28735761928533 - 212 = 28735761924437 is a prime.

It is a super-2 number, since 2×287357619285332 (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28735761928553) 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 11 ways as a sum of consecutive naturals, for example, 39580938933 + ... + 39580939658.

It is an arithmetic number, because the mean of its divisors is an integer number (3509509950912).

Almost surely, 228735761928533 is an apocalyptic number.

It is an amenable number.

28735761928533 is a deficient number, since it is larger than the sum of its proper divisors (13378357482411).

28735761928533 is a wasteful number, since it uses less digits than its factorization.

28735761928533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79161878616 (or 79161878605 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 69.

The spelling of 28735761928533 in words is "twenty-eight trillion, seven hundred thirty-five billion, seven hundred sixty-one million, nine hundred twenty-eight thousand, five hundred thirty-three".

Divisors: 1 3 11 33 121 363 79161878591 237485635773 870780664501 2612341993503 9578587309511 28735761928533