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13013210120 = 235977332989
BaseRepresentation
bin11000001111010010…
…11101010000001000
31020120220122120100012
430013221131100020
5203122340210440
65551142131052
7640323314051
oct140751352010
936526576305
1013013210120
115578688409
122632120a88
1312c5048741
148b6407728
155126b0e65
hex307a5d408

13013210120 has 32 divisors (see below), whose sum is σ = 29309779800. Its totient is φ = 5199940608.

The previous prime is 13013210113. The next prime is 13013210137. The reversal of 13013210120 is 2101231031.

It can be written as a sum of positive squares in 4 ways, for example, as 12921778276 + 91431844 = 113674^2 + 9562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13013210095 and 13013210104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127415 + ... + 205574.

Almost surely, 213013210120 is an apocalyptic number.

13013210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13013210120 is an abundant number, since it is smaller than the sum of its proper divisors (16296569680).

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

13013210120 is a wasteful number, since it uses less digits than its factorization.

13013210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333977 (or 333973 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13013210120 its reverse (2101231031), we get a palindrome (15114441151).

The spelling of 13013210120 in words is "thirteen billion, thirteen million, two hundred ten thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 977 1954 3908 4885 7816 9770 19540 39080 332989 665978 1331956 1664945 2663912 3329890 6659780 13319560 325330253 650660506 1301321012 1626651265 2602642024 3253302530 6506605060 13013210120