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28869119 is a prime number
BaseRepresentation
bin110111000100…
…0000111111111
32000022200222122
41232020013333
524342302434
62510433155
7500245346
oct156100777
960280878
1028869119
1115328884
1298027bb
135c9a326
143b96b5d
152803c2e
hex1b881ff

28869119 has 2 divisors, whose sum is σ = 28869120. Its totient is φ = 28869118.

The previous prime is 28869109. The next prime is 28869121. The reversal of 28869119 is 91196882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28869119 - 24 = 28869103 is a prime.

It is a super-2 number, since 2×288691192 = 1666852063672322, which contains 22 as substring.

Together with 28869121, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28869119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28869109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14434559 + 14434560.

It is an arithmetic number, because the mean of its divisors is an integer number (14434560).

Almost surely, 228869119 is an apocalyptic number.

28869119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28869119 is an equidigital number, since it uses as much as digits as its factorization.

28869119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 44.

The square root of 28869119 is about 5372.9990694211. Note that the first 3 decimals coincide. The cubic root of 28869119 is about 306.7687925197.

The spelling of 28869119 in words is "twenty-eight million, eight hundred sixty-nine thousand, one hundred nineteen".