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28541013 = 317953149
BaseRepresentation
bin110110011100…
…0000001010101
31222201000220120
41230320001111
524301303023
62455422153
7464410644
oct154700125
958630816
1028541013
1115124316
129684959
135bb3b97
143b0d35b
15278b8e3
hex1b38055

28541013 has 8 divisors (see below), whose sum is σ = 38268000. Its totient is φ = 18920688.

The previous prime is 28541003. The next prime is 28541039. The reversal of 28541013 is 31014582.

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

It is not a de Polignac number, because 28541013 - 210 = 28539989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28541003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26038 + ... + 27111.

It is an arithmetic number, because the mean of its divisors is an integer number (4783500).

Almost surely, 228541013 is an apocalyptic number.

It is an amenable number.

28541013 is a deficient number, since it is larger than the sum of its proper divisors (9726987).

28541013 is a wasteful number, since it uses less digits than its factorization.

28541013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53331.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28541013 is about 5342.3789644689. The cubic root of 28541013 is about 305.6021892803.

Adding to 28541013 its reverse (31014582), we get a palindrome (59555595).

The spelling of 28541013 in words is "twenty-eight million, five hundred forty-one thousand, thirteen".

Divisors: 1 3 179 537 53149 159447 9513671 28541013