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13103120044 = 2271379473607
BaseRepresentation
bin11000011010000000…
…11011111010101100
31020211011211110120101
430031000123322230
5203313344320134
610004113200444
7642464453110
oct141500337254
936734743511
1013103120044
115614408033
122658260124
13130a868691
148c432d740
1551a520e14
hex30d01beac

13103120044 has 48 divisors (see below), whose sum is σ = 26432727552. Its totient is φ = 5567202432.

The previous prime is 13103119999. The next prime is 13103120053. The reversal of 13103120044 is 44002130131.

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, 3630889 + ... + 3634495.

It is an arithmetic number, because the mean of its divisors is an integer number (550681824).

Almost surely, 213103120044 is an apocalyptic number.

13103120044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13103120044 is an abundant number, since it is smaller than the sum of its proper divisors (13329607508).

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

13103120044 is a wasteful number, since it uses less digits than its factorization.

13103120044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13103120044 its reverse (44002130131), we get a palindrome (57105250175).

The spelling of 13103120044 in words is "thirteen billion, one hundred three million, one hundred twenty thousand, forty-four".

Divisors: 1 2 4 7 14 28 137 274 548 947 959 1894 1918 3607 3788 3836 6629 7214 13258 14428 25249 26516 50498 100996 129739 259478 494159 518956 908173 988318 1816346 1976636 3415829 3459113 3632692 6831658 6918226 13663316 13836452 23910803 47821606 95643212 467968573 935937146 1871874292 3275780011 6551560022 13103120044