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28064153 = 132158781
BaseRepresentation
bin110101100001…
…1100110011001
31221210210210002
41223003212121
524141023103
62441302345
7460353455
oct153034631
957723702
1028064153
1114929017
1294949b5
135a77b10
143a27665
1526e5488
hex1ac3999

28064153 has 4 divisors (see below), whose sum is σ = 30222948. Its totient is φ = 25905360.

The previous prime is 28064111. The next prime is 28064171. The reversal of 28064153 is 35146082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35146082 = 217573041.

It can be written as a sum of positive squares in 2 ways, for example, as 14462809 + 13601344 = 3803^2 + 3688^2 .

It is not a de Polignac number, because 28064153 - 216 = 27998617 is a prime.

It is a super-5 number, since 5×280641535 (a number of 38 digits) contains 55555 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28064173) by changing a digit.

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, 1079378 + ... + 1079403.

It is an arithmetic number, because the mean of its divisors is an integer number (7555737).

Almost surely, 228064153 is an apocalyptic number.

It is an amenable number.

28064153 is a deficient number, since it is larger than the sum of its proper divisors (2158795).

28064153 is a wasteful number, since it uses less digits than its factorization.

28064153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158794.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28064153 is about 5297.5610425931. The cubic root of 28064153 is about 303.8906325480.

The spelling of 28064153 in words is "twenty-eight million, sixty-four thousand, one hundred fifty-three".

Divisors: 1 13 2158781 28064153