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28850356087 = 74121479441
BaseRepresentation
bin11010110111100111…
…010111111101110111
32202110122000221101221
4122313213113331313
5433041142343322
621130443131211
72040636660220
oct326747277567
982418027357
1028850356087
11112653015a3
125711b13b07
13294a152127
1415798a6247
15b3cc389c7
hex6b79d7f77

28850356087 has 4 divisors (see below), whose sum is σ = 32971835536. Its totient is φ = 24728876640.

The previous prime is 28850356069. The next prime is 28850356091. The reversal of 28850356087 is 78065305882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28850356087 - 27 = 28850355959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28850356037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2060739714 + ... + 2060739727.

It is an arithmetic number, because the mean of its divisors is an integer number (8242958884).

Almost surely, 228850356087 is an apocalyptic number.

28850356087 is a deficient number, since it is larger than the sum of its proper divisors (4121479449).

28850356087 is an equidigital number, since it uses as much as digits as its factorization.

28850356087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121479448.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 28850356087 in words is "twenty-eight billion, eight hundred fifty million, three hundred fifty-six thousand, eighty-seven".

Divisors: 1 7 4121479441 28850356087