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13205154120 = 2335199955049
BaseRepresentation
bin11000100110001011…
…01010100101001000
31021002021211100000020
430103011222211020
5204021004412440
610022200140440
7645143646414
oct142305524510
937067740006
1013205154120
115666a68814
122686467720
131325a41c82
148d3acdd44
155244783d0
hex31316a948

13205154120 has 64 divisors (see below), whose sum is σ = 39636000000. Its totient is φ = 3519548928.

The previous prime is 13205154119. The next prime is 13205154121. The reversal of 13205154120 is 2145150231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13205154119) and next prime (13205154121).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (13205154121) 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, 212356 + ... + 267404.

It is an arithmetic number, because the mean of its divisors is an integer number (619312500).

Almost surely, 213205154120 is an apocalyptic number.

13205154120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13205154120 is an abundant number, since it is smaller than the sum of its proper divisors (26430845880).

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

13205154120 is a wasteful number, since it uses less digits than its factorization.

13205154120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57062 (or 57058 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 13205154120 in words is "thirteen billion, two hundred five million, one hundred fifty-four thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1999 3998 5997 7996 9995 11994 15992 19990 23988 29985 39980 47976 55049 59970 79960 110098 119940 165147 220196 239880 275245 330294 440392 550490 660588 825735 1100980 1321176 1651470 2201960 3302940 6605880 110042951 220085902 330128853 440171804 550214755 660257706 880343608 1100429510 1320515412 1650644265 2200859020 2641030824 3301288530 4401718040 6602577060 13205154120