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28159027 = 1317912101
BaseRepresentation
bin110101101101…
…0110000110011
31221222121220221
41223122300303
524202042102
62443313511
7461230201
oct153326063
957877827
1028159027
1114993326
12951b897
135aac060
143a50071
152713637
hex1adac33

28159027 has 8 divisors (see below), whose sum is σ = 30497040. Its totient is φ = 25845600.

The previous prime is 28159009. The next prime is 28159031. The reversal of 28159027 is 72095182.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28159027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28158983 and 28159001.

It is not an unprimeable number, because it can be changed into a prime (28159057) 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, 3724 + ... + 8377.

It is an arithmetic number, because the mean of its divisors is an integer number (3812130).

Almost surely, 228159027 is an apocalyptic number.

28159027 is a deficient number, since it is larger than the sum of its proper divisors (2338013).

28159027 is a wasteful number, since it uses less digits than its factorization.

28159027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 28159027 is about 5306.5079854835. The cubic root of 28159027 is about 304.2326927744.

The spelling of 28159027 in words is "twenty-eight million, one hundred fifty-nine thousand, twenty-seven".

Divisors: 1 13 179 2327 12101 157313 2166079 28159027