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28196005 = 547119983
BaseRepresentation
bin110101110001…
…1110010100101
31222001111122111
41223203302211
524204233010
62444201021
7461443045
oct153436245
958044574
1028196005
1114a09092
129539171
135ac2b36
143a5d725
15271e58a
hex1ae3ca5

28196005 has 8 divisors (see below), whose sum is σ = 34555392. Its totient is φ = 22076688.

The previous prime is 28195997. The next prime is 28196023. The reversal of 28196005 is 50069182.

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 28196005 - 23 = 28195997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59757 + ... + 60226.

It is an arithmetic number, because the mean of its divisors is an integer number (4319424).

Almost surely, 228196005 is an apocalyptic number.

It is an amenable number.

28196005 is a deficient number, since it is larger than the sum of its proper divisors (6359387).

28196005 is a wasteful number, since it uses less digits than its factorization.

28196005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120035.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 28196005 is about 5309.9910546064. The cubic root of 28196005 is about 304.3658057509.

The spelling of 28196005 in words is "twenty-eight million, one hundred ninety-six thousand, five".

Divisors: 1 5 47 235 119983 599915 5639201 28196005