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28611316055 = 571213673921
BaseRepresentation
bin11010101001010111…
…100000100101010111
32201211222020110010102
4122221113200211113
5432043444103210
621051023444315
72032005113420
oct325127404527
981758213112
1028611316055
1111152384253
125665a5669b
13290c77921a
141555c40647
15b26c6bea5
hex6a95e0957

28611316055 has 16 divisors (see below), whose sum is σ = 39270782784. Its totient is φ = 19602984960.

The previous prime is 28611316009. The next prime is 28611316061. The reversal of 28611316055 is 55061311682.

It is not a de Polignac number, because 28611316055 - 212 = 28611311959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294506 + ... + 379415.

It is an arithmetic number, because the mean of its divisors is an integer number (2454423924).

Almost surely, 228611316055 is an apocalyptic number.

28611316055 is a deficient number, since it is larger than the sum of its proper divisors (10659466729).

28611316055 is a wasteful number, since it uses less digits than its factorization.

28611316055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675146.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 28611316055 in words is "twenty-eight billion, six hundred eleven million, three hundred sixteen thousand, fifty-five".

Divisors: 1 5 7 35 1213 6065 8491 42455 673921 3369605 4717447 23587235 817466173 4087330865 5722263211 28611316055