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28456060 = 2252361861
BaseRepresentation
bin110110010001…
…1010001111100
31222112201101011
41230203101330
524241043220
62453525004
7463605163
oct154432174
958481334
1028456060
1115076506
129643764
135b84309
143aca3da
15277165a
hex1b2347c

28456060 has 24 divisors (see below), whose sum is σ = 62356896. Its totient is φ = 10887360.

The previous prime is 28456007. The next prime is 28456063. The reversal of 28456060 is 6065482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456063) 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 7 ways as a sum of consecutive naturals, for example, 30471 + ... + 31390.

It is an arithmetic number, because the mean of its divisors is an integer number (2598204).

Almost surely, 228456060 is an apocalyptic number.

28456060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28456060 is an abundant number, since it is smaller than the sum of its proper divisors (33900836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28456060 is a wasteful number, since it uses less digits than its factorization.

28456060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61893 (or 61891 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28456060 is about 5334.4221805178. The cubic root of 28456060 is about 305.2986772300.

The spelling of 28456060 in words is "twenty-eight million, four hundred fifty-six thousand, sixty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 61861 123722 247444 309305 618610 1237220 1422803 2845606 5691212 7114015 14228030 28456060