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28027683 = 325575591
BaseRepresentation
bin110101011101…
…0101100100011
31221201221202100
41222322230203
524133341213
62440421443
7460142235
oct152725443
957657670
1028027683
1114903682
129477883
135a64338
143a18255
1526d9773
hex1abab23

28027683 has 12 divisors (see below), whose sum is σ = 40564368. Its totient is φ = 18648240.

The previous prime is 28027621. The next prime is 28027697. The reversal of 28027683 is 38672082.

It is a happy number.

It is not a de Polignac number, because 28027683 - 212 = 28023587 is a prime.

It is a Sastry number since concatenated with its successor gives a square.

It is not an unprimeable number, because it can be changed into a prime (28027583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2218 + ... + 7808.

It is an arithmetic number, because the mean of its divisors is an integer number (3380364).

Almost surely, 228027683 is an apocalyptic number.

28027683 is a deficient number, since it is larger than the sum of its proper divisors (12536685).

28027683 is a wasteful number, since it uses less digits than its factorization.

28027683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154 (or 6151 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28027683 is about 5294.1177735294. The cubic root of 28027683 is about 303.7589379070.

The spelling of 28027683 in words is "twenty-eight million, twenty-seven thousand, six hundred eighty-three".

Divisors: 1 3 9 557 1671 5013 5591 16773 50319 3114187 9342561 28027683