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120193668 = 223272611117
BaseRepresentation
bin1110010101000…
…00001010000100
322101011110201100
413022200022010
5221232144133
615532100100
72656425600
oct712401204
9271143640
10120193668
1161934311
1234304630
131bb9411a
1411d6a500
15a842e13
hex72a0284

120193668 has 108 divisors (see below), whose sum is σ = 359542092. Its totient is φ = 33747840.

The previous prime is 120193663. The next prime is 120193691. The reversal of 120193668 is 866391021.

It can be written as a sum of positive squares in 2 ways, for example, as 4588164 + 115605504 = 2142^2 + 10752^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (120193663) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 107046 + ... + 108162.

Almost surely, 2120193668 is an apocalyptic number.

120193668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120193668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179771046).

120193668 is an abundant number, since it is smaller than the sum of its proper divisors (239348424).

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

120193668 is a wasteful number, since it uses less digits than its factorization.

120193668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 120193668 is about 10963.2872807384. The cubic root of 120193668 is about 493.5076202234.

The spelling of 120193668 in words is "one hundred twenty million, one hundred ninety-three thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 49 61 63 84 98 122 126 147 183 196 244 252 294 366 427 441 549 588 732 854 882 1098 1117 1281 1708 1764 2196 2234 2562 2989 3351 3843 4468 5124 5978 6702 7686 7819 8967 10053 11956 13404 15372 15638 17934 20106 23457 26901 31276 35868 40212 46914 53802 54733 68137 70371 93828 107604 109466 136274 140742 164199 204411 218932 272548 281484 328398 408822 476959 492597 613233 656796 817644 953918 985194 1226466 1430877 1907836 1970388 2452932 2861754 3338713 4292631 5723508 6677426 8585262 10016139 13354852 17170524 20032278 30048417 40064556 60096834 120193668