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120378880 = 29559797
BaseRepresentation
bin1110010110011…
…01011000000000
322101111212210001
413023031120000
5221304111010
615540045344
72661126556
oct713153000
9271455701
10120378880
1161a50486
1234393854
131bc2a50b
1411db7bd6
15a87cc3a
hex72cd600

120378880 has 80 divisors (see below), whose sum is σ = 293887440. Its totient is φ = 47276032.

The previous prime is 120378877. The next prime is 120378893. The reversal of 120378880 is 88873021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150642 + ... + 151438.

It is an arithmetic number, because the mean of its divisors is an integer number (3673593).

Almost surely, 2120378880 is an apocalyptic number.

120378880 is a gapful number since it is divisible by the number (10) 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 120378880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146943720).

120378880 is an abundant number, since it is smaller than the sum of its proper divisors (173508560).

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

120378880 is an frugal number, since it uses more digits than its factorization.

120378880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 120378880 is about 10971.7309482141. The cubic root of 120378880 is about 493.7609797270.

The spelling of 120378880 in words is "one hundred twenty million, three hundred seventy-eight thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 59 64 80 118 128 160 236 256 295 320 472 512 590 640 797 944 1180 1280 1594 1888 2360 2560 3188 3776 3985 4720 6376 7552 7970 9440 12752 15104 15940 18880 25504 30208 31880 37760 47023 51008 63760 75520 94046 102016 127520 151040 188092 204032 235115 255040 376184 408064 470230 510080 752368 940460 1020160 1504736 1880920 2040320 3009472 3761840 6018944 7523680 12037888 15047360 24075776 30094720 60189440 120378880