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15127840020 = 2235565144617
BaseRepresentation
bin11100001011011000…
…01000010100010100
31110001021200220020010
432011230020110110
5221440211340040
610541042040220
71043611342566
oct160554102424
943037626203
1015127840020
1164632a9127
122b22349070
131571189637
14a371c1336
155d8167e80
hex385b08514

15127840020 has 48 divisors (see below), whose sum is σ = 42366397248. Its totient is φ = 4033286400.

The previous prime is 15127839983. The next prime is 15127840027. The reversal of 15127840020 is 2004872151.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 15127840020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15127840027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316752 + ... + 361368.

It is an arithmetic number, because the mean of its divisors is an integer number (882633276).

Almost surely, 215127840020 is an apocalyptic number.

15127840020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15127840020 is an abundant number, since it is smaller than the sum of its proper divisors (27238557228).

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

15127840020 is a wasteful number, since it uses less digits than its factorization.

15127840020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50280 (or 50278 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The spelling of 15127840020 in words is "fifteen billion, one hundred twenty-seven million, eight hundred forty thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 5651 11302 16953 22604 28255 33906 44617 56510 67812 84765 89234 113020 133851 169530 178468 223085 267702 339060 446170 535404 669255 892340 1338510 2677020 252130667 504261334 756392001 1008522668 1260653335 1512784002 2521306670 3025568004 3781960005 5042613340 7563920010 15127840020