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28755196071 = 371369295051
BaseRepresentation
bin11010110001111100…
…010111100010100111
32202012222222022101220
4122301330113202213
5432342312233241
621113203351423
72035403063610
oct326174274247
982188868356
1028755196071
1111216616458
1256a6082573
132933514624
14156adb4c07
15b346dd166
hex6b1f178a7

28755196071 has 8 divisors (see below), whose sum is σ = 43817441664. Its totient is φ = 16431540600.

The previous prime is 28755196061. The next prime is 28755196079. The reversal of 28755196071 is 17069155782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28755196071 - 29 = 28755195559 is a prime.

It is a super-2 number, since 2×287551960712 (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755196079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684647505 + ... + 684647546.

It is an arithmetic number, because the mean of its divisors is an integer number (5477180208).

Almost surely, 228755196071 is an apocalyptic number.

28755196071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28755196071 is a deficient number, since it is larger than the sum of its proper divisors (15062245593).

28755196071 is a wasteful number, since it uses less digits than its factorization.

28755196071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369295061.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 28755196071 in words is "twenty-eight billion, seven hundred fifty-five million, one hundred ninety-six thousand, seventy-one".

Divisors: 1 3 7 21 1369295051 4107885153 9585065357 28755196071