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28666010 = 2531891039
BaseRepresentation
bin110110101011…
…0100010011010
31222221101101002
41231112202122
524314303020
62502225002
7465441242
oct155264232
958841332
1028666010
11151aa21a
129725162
135c28a49
143b42b22
1527b3975
hex1b5689a

28666010 has 32 divisors (see below), whose sum is σ = 53913600. Its totient is φ = 10961280.

The previous prime is 28665983. The next prime is 28666021. The reversal of 28666010 is 1066682.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27071 + ... + 28109.

It is an arithmetic number, because the mean of its divisors is an integer number (1684800).

Almost surely, 228666010 is an apocalyptic number.

28666010 is a deficient number, since it is larger than the sum of its proper divisors (25247590).

28666010 is a wasteful number, since it uses less digits than its factorization.

28666010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28666010 is about 5354.0648109637. The cubic root of 28666010 is about 306.0476736636.

The spelling of 28666010 in words is "twenty-eight million, six hundred sixty-six thousand, ten".

Divisors: 1 2 5 10 31 62 89 155 178 310 445 890 1039 2078 2759 5195 5518 10390 13795 27590 32209 64418 92471 161045 184942 322090 462355 924710 2866601 5733202 14333005 28666010