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28810305216 = 2632711259053
BaseRepresentation
bin11010110101001110…
…100101111011000000
32202100211200010221100
4122311032211323000
5433000414231331
621122452454400
72036642360640
oct326516457300
982324603840
1028810305216
1111244736800
12570061a400
132941a6b3a4
14157443c520
15b39476ae6
hex6b53a5ec0

28810305216 has 252 divisors, whose sum is σ = 103738035856. Its totient is φ = 7483069440.

The previous prime is 28810305193. The next prime is 28810305233. The reversal of 28810305216 is 61250301882.

It is a happy number.

28810305216 is a `hidden beast` number, since 28 + 8 + 103 + 0 + 521 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 458346 + ... + 517398.

Almost surely, 228810305216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28810305216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51869017928).

28810305216 is an abundant number, since it is smaller than the sum of its proper divisors (74927730640).

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

28810305216 is a wasteful number, since it uses less digits than its factorization.

28810305216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59100 (or 59076 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 28810305216 in words is "twenty-eight billion, eight hundred ten million, three hundred five thousand, two hundred sixteen".