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28081207850170 = 252808120785017
BaseRepresentation
bin1100110001010001010100…
…11010110011010010111010
310200102112111122202010110111
412120220222122303102322
512140040303202201140
6135420155004134534
75625541336254616
oct630505232632272
9120375448663414
1028081207850170
118a4719a835032
1231963ab83744a
13128907b322337
146d11cdc4a346
1533a6cb3567ea
hex198a2a6b34ba

28081207850170 has 8 divisors (see below), whose sum is σ = 50546174130324. Its totient is φ = 11232483140064.

The previous prime is 28081207850153. The next prime is 28081207850173. The reversal of 28081207850170 is 7105870218082.

It can be written as a sum of positive squares in 2 ways, for example, as 28028352460761 + 52855389409 = 5294181^2 + 229903^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28081207850173) 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, 1404060392499 + ... + 1404060392518.

Almost surely, 228081207850170 is an apocalyptic number.

28081207850170 is a deficient number, since it is larger than the sum of its proper divisors (22464966280154).

28081207850170 is a wasteful number, since it uses less digits than its factorization.

28081207850170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808120785024.

The product of its (nonzero) digits is 501760, while the sum is 49.

The spelling of 28081207850170 in words is "twenty-eight trillion, eighty-one billion, two hundred seven million, eight hundred fifty thousand, one hundred seventy".

Divisors: 1 2 5 10 2808120785017 5616241570034 14040603925085 28081207850170