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13020142560 = 253561444677
BaseRepresentation
bin11000010000000111…
…11001101111100000
31020121101200202212020
430020003321233200
5203131124030220
65551550501440
7640436246205
oct141003715740
936541622766
1013020142560
1155815928a7
122634504880
1312c6604c89
148b72cdcac
155130d0040
hex3080f9be0

13020142560 has 96 divisors (see below), whose sum is σ = 41685894432. Its totient is φ = 3415111680.

The previous prime is 13020142501. The next prime is 13020142561. The reversal of 13020142560 is 6524102031.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×130201425602 (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13020142560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020142561) 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, 193059 + ... + 251618.

It is an arithmetic number, because the mean of its divisors is an integer number (434228067).

Almost surely, 213020142560 is an apocalyptic number.

13020142560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13020142560 is an abundant number, since it is smaller than the sum of its proper divisors (28665751872).

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

13020142560 is a wasteful number, since it uses less digits than its factorization.

13020142560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444756 (or 444748 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 13020142560 its reverse (6524102031), we get a palindrome (19544244591).

The spelling of 13020142560 in words is "thirteen billion, twenty million, one hundred forty-two thousand, five hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 61 80 96 120 122 160 183 240 244 305 366 480 488 610 732 915 976 1220 1464 1830 1952 2440 2928 3660 4880 5856 7320 9760 14640 29280 444677 889354 1334031 1778708 2223385 2668062 3557416 4446770 5336124 6670155 7114832 8893540 10672248 13340310 14229664 17787080 21344496 26680620 27125297 35574160 42688992 53361240 54250594 71148320 81375891 106722480 108501188 135626485 162751782 213444960 217002376 271252970 325503564 406879455 434004752 542505940 651007128 813758910 868009504 1085011880 1302014256 1627517820 2170023760 2604028512 3255035640 4340047520 6510071280 13020142560