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13012013020 = 2253391191861
BaseRepresentation
bin11000001111001001…
…11000111111011100
31020120211101202020011
430013210320333130
5203122033404040
65551100333004
7640310200006
oct140744707734
936524352204
1013012013020
115577a3aa76
122631844164
1312c4a198b6
148b61b5376
155125263ea
hex307938fdc

13012013020 has 24 divisors (see below), whose sum is σ = 27333427968. Its totient is φ = 5203243200.

The previous prime is 13012012967. The next prime is 13012013051. The reversal of 13012013020 is 2031021031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28111 + ... + 163750.

It is an arithmetic number, because the mean of its divisors is an integer number (1138892832).

Almost surely, 213012013020 is an apocalyptic number.

13012013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012013020 is an abundant number, since it is smaller than the sum of its proper divisors (14321414948).

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

13012013020 is a wasteful number, since it uses less digits than its factorization.

13012013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195261 (or 195259 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13012013020 its reverse (2031021031), we get a palindrome (15043034051).

The spelling of 13012013020 in words is "thirteen billion, twelve million, thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 3391 6782 13564 16955 33910 67820 191861 383722 767444 959305 1918610 3837220 650600651 1301201302 2602402604 3253003255 6506006510 13012013020