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28495868 = 2217341179
BaseRepresentation
bin110110010110…
…0111111111100
31222121201222112
41230230333330
524243331433
62454433152
7464132222
oct154547774
958551875
1028495868
11150a3405
1296627b8
135b9947b
143adab12
15277d348
hex1b2cffc

28495868 has 12 divisors (see below), whose sum is σ = 50157240. Its totient is φ = 14165232.

The previous prime is 28495867. The next prime is 28495889. The reversal of 28495868 is 86859482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19898 + ... + 21281.

It is an arithmetic number, because the mean of its divisors is an integer number (4179770).

Almost surely, 228495868 is an apocalyptic number.

It is an amenable number.

28495868 is a deficient number, since it is larger than the sum of its proper divisors (21661372).

28495868 is a wasteful number, since it uses less digits than its factorization.

28495868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41356 (or 41354 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 28495868 is about 5338.1521147303. The cubic root of 28495868 is about 305.4409745933.

The spelling of 28495868 in words is "twenty-eight million, four hundred ninety-five thousand, eight hundred sixty-eight".

Divisors: 1 2 4 173 346 692 41179 82358 164716 7123967 14247934 28495868