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28085488301 = 1323611539859
BaseRepresentation
bin11010001010000001…
…101000101010101101
32200111022210122001102
4122022001220222231
5430004341111201
620522521252445
72012661466043
oct321201505255
980438718042
1028085488301
1110a02587062
125539934125
132857850240
141506084393
15ae5a0126b
hex68a068aad

28085488301 has 16 divisors (see below), whose sum is σ = 32078363520. Its totient is φ = 24391350720.

The previous prime is 28085488297. The next prime is 28085488303. The reversal of 28085488301 is 10388458082.

It is a cyclic number.

It is not a de Polignac number, because 28085488301 - 22 = 28085488297 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 (28085488303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751691 + ... + 788168.

It is an arithmetic number, because the mean of its divisors is an integer number (2004897720).

Almost surely, 228085488301 is an apocalyptic number.

It is an amenable number.

28085488301 is a deficient number, since it is larger than the sum of its proper divisors (3992875219).

28085488301 is a wasteful number, since it uses less digits than its factorization.

28085488301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539956.

The product of its (nonzero) digits is 491520, while the sum is 47.

The spelling of 28085488301 in words is "twenty-eight billion, eighty-five million, four hundred eighty-eight thousand, three hundred one".

Divisors: 1 13 23 61 299 793 1403 18239 1539859 20018167 35416757 93931399 460417841 1221108187 2160422177 28085488301