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120028866 = 2320004811
BaseRepresentation
bin1110010011101…
…11111011000010
322100212002122120
413021313323002
5221211410431
615524345110
72655141246
oct711677302
9270762576
10120028866
1161831511
1234245196
131bb370c9
1411d26426
15a80e196
hex7277ec2

120028866 has 8 divisors (see below), whose sum is σ = 240057744. Its totient is φ = 40009620.

The previous prime is 120028861. The next prime is 120028901. The reversal of 120028866 is 668820021.

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

120028866 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120028861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10002400 + ... + 10002411.

It is an arithmetic number, because the mean of its divisors is an integer number (30007218).

Almost surely, 2120028866 is an apocalyptic number.

120028866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

120028866 is a wasteful number, since it uses less digits than its factorization.

120028866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20004816.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 120028866 is about 10955.7686174910. The cubic root of 120028866 is about 493.2819615162.

Adding to 120028866 its reverse (668820021), we get a palindrome (788848887).

The spelling of 120028866 in words is "one hundred twenty million, twenty-eight thousand, eight hundred sixty-six".

Divisors: 1 2 3 6 20004811 40009622 60014433 120028866