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28860008 = 2331116371
BaseRepresentation
bin110111000010…
…1111001101000
32000022020111012
41232011321220
524342010013
62510323052
7500206652
oct156057150
960266435
1028860008
1115321a51
1297b9488
135c96138
143b936d2
1528011a8
hex1b85e68

28860008 has 16 divisors (see below), whose sum is σ = 55858560. Its totient is φ = 13964400.

The previous prime is 28860001. The next prime is 28860019. The reversal of 28860008 is 80006882.

It is not an unprimeable number, because it can be changed into a prime (28860001) 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, 57938 + ... + 58433.

It is an arithmetic number, because the mean of its divisors is an integer number (3491160).

Almost surely, 228860008 is an apocalyptic number.

It is an amenable number.

28860008 is a deficient number, since it is larger than the sum of its proper divisors (26998552).

28860008 is a wasteful number, since it uses less digits than its factorization.

28860008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116408 (or 116404 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 28860008 is about 5372.1511520061. The cubic root of 28860008 is about 306.7365173799.

The spelling of 28860008 in words is "twenty-eight million, eight hundred sixty thousand, eight".

Divisors: 1 2 4 8 31 62 124 248 116371 232742 465484 930968 3607501 7215002 14430004 28860008