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28085914 = 219739103
BaseRepresentation
bin110101100100…
…0111010011010
31221211220122001
41223020322122
524142222124
62441551214
7460504063
oct153107232
957756561
1028085914
11149433aa
1294a550a
135a849ac
143a3156a
1526ebb44
hex1ac8e9a

28085914 has 8 divisors (see below), whose sum is σ = 44346240. Its totient is φ = 13303836.

The previous prime is 28085909. The next prime is 28085929. The reversal of 28085914 is 41958082.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369514 + ... + 369589.

It is an arithmetic number, because the mean of its divisors is an integer number (5543280).

Almost surely, 228085914 is an apocalyptic number.

28085914 is a deficient number, since it is larger than the sum of its proper divisors (16260326).

28085914 is a wasteful number, since it uses less digits than its factorization.

28085914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739124.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 28085914 is about 5299.6145142831. The cubic root of 28085914 is about 303.9691580553.

The spelling of 28085914 in words is "twenty-eight million, eighty-five thousand, nine hundred fourteen".

Divisors: 1 2 19 38 739103 1478206 14042957 28085914