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120281668 = 22137132579
BaseRepresentation
bin1110010101101…
…01101001000100
322101022221102121
413022311221010
5221243003133
615534015324
72660243263
oct712655104
9271287377
10120281668
1161994441
1234347544
131bbc51b0
1411d905da
15a85e02d
hex72b5a44

120281668 has 24 divisors (see below), whose sum is σ = 229884480. Its totient is φ = 54731040.

The previous prime is 120281657. The next prime is 120281669. The reversal of 120281668 is 866182021.

It is not an unprimeable number, because it can be changed into a prime (120281669) 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, 12598 + ... + 19981.

It is an arithmetic number, because the mean of its divisors is an integer number (9578520).

Almost surely, 2120281668 is an apocalyptic number.

It is an amenable number.

120281668 is a deficient number, since it is larger than the sum of its proper divisors (109602812).

120281668 is a wasteful number, since it uses less digits than its factorization.

120281668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32667 (or 32665 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 120281668 is about 10967.2999411888. The cubic root of 120281668 is about 493.6280316583.

The spelling of 120281668 in words is "one hundred twenty million, two hundred eighty-one thousand, six hundred sixty-eight".

Divisors: 1 2 4 13 26 52 71 142 284 923 1846 3692 32579 65158 130316 423527 847054 1694108 2313109 4626218 9252436 30070417 60140834 120281668