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28161141679 = 112988279441
BaseRepresentation
bin11010001110100010…
…001110101110101111
32200200121011012222101
4122032202032232233
5430133223013204
620534222555531
72014600516606
oct321642165657
980617135871
1028161141679
1110a41259610
12555b138ba7
13286a41b058
141512138a3d
15aec496ea4
hex68e88ebaf

28161141679 has 8 divisors (see below), whose sum is σ = 31780599120. Its totient is φ = 24718243200.

The previous prime is 28161141667. The next prime is 28161141703. The reversal of 28161141679 is 97614116182.

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

It is a cyclic number.

It is not a de Polignac number, because 28161141679 - 25 = 28161141647 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 (28161141779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44139402 + ... + 44140039.

It is an arithmetic number, because the mean of its divisors is an integer number (3972574890).

Almost surely, 228161141679 is an apocalyptic number.

28161141679 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28161141679 is a deficient number, since it is larger than the sum of its proper divisors (3619457441).

28161141679 is a wasteful number, since it uses less digits than its factorization.

28161141679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88279481.

The product of its digits is 145152, while the sum is 46.

The spelling of 28161141679 in words is "twenty-eight billion, one hundred sixty-one million, one hundred forty-one thousand, six hundred seventy-nine".

Divisors: 1 11 29 319 88279441 971073851 2560103789 28161141679