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28979 is a prime number
BaseRepresentation
bin111000100110011
31110202022
413010303
51411404
6342055
7150326
oct70463
943668
1028979
111a855
121492b
1310262
14a7bd
1588be
hex7133

28979 has 2 divisors, whose sum is σ = 28980. Its totient is φ = 28978.

The previous prime is 28961. The next prime is 29009. The reversal of 28979 is 97982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28979 - 28 = 28723 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (28909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14489 + 14490.

It is an arithmetic number, because the mean of its divisors is an integer number (14490).

228979 is an apocalyptic number.

28979 is a deficient number, since it is larger than the sum of its proper divisors (1).

28979 is an equidigital number, since it uses as much as digits as its factorization.

28979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 28979 is about 170.2321943699. The cubic root of 28979 is about 30.7157505289.

The spelling of 28979 in words is "twenty-eight thousand, nine hundred seventy-nine".