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120420260 = 22571137619
BaseRepresentation
bin1110010110101…
…11011110100100
322101120222112122
413023113132210
5221311422020
615541005112
72661361322
oct713273644
9271528478
10120420260
1161a79584
12343b3798
131bc432bc
1411dc8d12
15a88a125
hex72d77a4

120420260 has 48 divisors (see below), whose sum is σ = 258733440. Its totient is φ = 47066880.

The previous prime is 120420241. The next prime is 120420323. The reversal of 120420260 is 62024021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194231 + ... + 194849.

It is an arithmetic number, because the mean of its divisors is an integer number (5390280).

Almost surely, 2120420260 is an apocalyptic number.

120420260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120420260 is an abundant number, since it is smaller than the sum of its proper divisors (138313180).

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

120420260 is a wasteful number, since it uses less digits than its factorization.

120420260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120420260 is about 10973.6165415054. The cubic root of 120420260 is about 493.8175496963.

Adding to 120420260 its reverse (62024021), we get a palindrome (182444281).

The spelling of 120420260 in words is "one hundred twenty million, four hundred twenty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 71 137 142 274 284 355 548 619 685 710 1238 1370 1420 2476 2740 3095 6190 9727 12380 19454 38908 43949 48635 84803 87898 97270 169606 175796 194540 219745 339212 424015 439490 848030 878980 1696060 6021013 12042026 24084052 30105065 60210130 120420260