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120323980 = 22577391163
BaseRepresentation
bin1110010101111…
…11111110001100
322101102002110201
413022333332030
5221300331410
615534543244
72660510530
oct712777614
9271362421
10120323980
1161a13207
1234367b24
131bc0b52a
1411da1bc0
15a86b83a
hex72bff8c

120323980 has 48 divisors (see below), whose sum is σ = 289416960. Its totient is φ = 41162688.

The previous prime is 120323953. The next prime is 120323981. The reversal of 120323980 is 89323021.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (120323981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102879 + ... + 104041.

It is an arithmetic number, because the mean of its divisors is an integer number (6029520).

Almost surely, 2120323980 is an apocalyptic number.

120323980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120323980 is an abundant number, since it is smaller than the sum of its proper divisors (169092980).

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

120323980 is a wasteful number, since it uses less digits than its factorization.

120323980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 120323980 is about 10969.2287787246. The cubic root of 120323980 is about 493.6859067582.

The spelling of 120323980 in words is "one hundred twenty million, three hundred twenty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 739 1163 1478 2326 2956 3695 4652 5173 5815 7390 8141 10346 11630 14780 16282 20692 23260 25865 32564 40705 51730 81410 103460 162820 859457 1718914 3437828 4297285 6016199 8594570 12032398 17189140 24064796 30080995 60161990 120323980