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28065083 = 232335237
BaseRepresentation
bin110101100001…
…1110100111011
31221210212001112
41223003310323
524141040313
62441310535
7460356254
oct153036473
957725045
1028065083
1114929792
12949544b
135a78377
143a27b2b
1526e58a8
hex1ac3d3b

28065083 has 8 divisors (see below), whose sum is σ = 29416608. Its totient is φ = 26724544.

The previous prime is 28065077. The next prime is 28065101. The reversal of 28065083 is 38056082.

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 28065083 - 212 = 28060987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28065043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2741 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (3677076).

Almost surely, 228065083 is an apocalyptic number.

28065083 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28065083 is a deficient number, since it is larger than the sum of its proper divisors (1351525).

28065083 is a wasteful number, since it uses less digits than its factorization.

28065083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5493.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28065083 is about 5297.6488181079. The cubic root of 28065083 is about 303.8939893233.

Subtracting 28065083 from its reverse (38056082), we obtain a palindrome (9990999).

The spelling of 28065083 in words is "twenty-eight million, sixty-five thousand, eighty-three".

Divisors: 1 23 233 5237 5359 120451 1220221 28065083