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13120030 = 2571121549
BaseRepresentation
bin110010000011…
…001000011110
3220200120022001
4302003020132
511324320110
61145112514
7216342550
oct62031036
926616261
1013120030
117451300
12448873a
132944a41
141a574d0
15124263a
hexc8321e

13120030 has 48 divisors (see below), whose sum is σ = 29685600. Its totient is φ = 4086720.

The previous prime is 13119983. The next prime is 13120057. The reversal of 13120030 is 3002131.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 13119989 and 13120016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7696 + ... + 9244.

It is an arithmetic number, because the mean of its divisors is an integer number (618450).

Almost surely, 213120030 is an apocalyptic number.

13120030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13120030 is an abundant number, since it is smaller than the sum of its proper divisors (16565570).

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

13120030 is a wasteful number, since it uses less digits than its factorization.

13120030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13120030 is about 3622.1581964348. The cubic root of 13120030 is about 235.8549213660.

Adding to 13120030 its reverse (3002131), we get a palindrome (16122161).

The spelling of 13120030 in words is "thirteen million, one hundred twenty thousand, thirty".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 121 154 242 385 605 770 847 1210 1549 1694 3098 4235 7745 8470 10843 15490 17039 21686 34078 54215 85195 108430 119273 170390 187429 238546 374858 596365 937145 1192730 1312003 1874290 2624006 6560015 13120030