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120239680 = 2651134159
BaseRepresentation
bin1110010101010…
…11011001000000
322101020210211111
413022223121000
5221240132210
615533053104
72660010001
oct712533100
9271223744
10120239680
1161965940
1234327194
131bbac052
1411d7d1a8
15a85188a
hex72ab640

120239680 has 56 divisors (see below), whose sum is σ = 312359040. Its totient is φ = 43722240.

The previous prime is 120239641. The next prime is 120239689. The reversal of 120239680 is 86932021.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (120239689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13560 + ... + 20599.

It is an arithmetic number, because the mean of its divisors is an integer number (5577840).

Almost surely, 2120239680 is an apocalyptic number.

120239680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120239680 is an abundant number, since it is smaller than the sum of its proper divisors (192119360).

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

120239680 is a wasteful number, since it uses less digits than its factorization.

120239680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34187 (or 34177 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 120239680 is about 10965.3855381377. The cubic root of 120239680 is about 493.5705863126.

The spelling of 120239680 in words is "one hundred twenty million, two hundred thirty-nine thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 80 88 110 160 176 220 320 352 440 704 880 1760 3520 34159 68318 136636 170795 273272 341590 375749 546544 683180 751498 1093088 1366360 1502996 1878745 2186176 2732720 3005992 3757490 5465440 6011984 7514980 10930880 12023968 15029960 24047936 30059920 60119840 120239680