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2788249928960 = 2857130680567
BaseRepresentation
bin101000100100110000101…
…001011000010100000000
3100212112221221011010200102
4220210300221120110000
5331140313440211320
65532523200341532
7405305301231146
oct50446051302400
910775857133612
102788249928960
11985543439271
1239046b3148a8
13172c14095492
1498d48495596
154c7de96c175
hex28930a58500

2788249928960 has 72 divisors (see below), whose sum is σ = 6772796747136. Its totient is φ = 1099591485440.

The previous prime is 2788249928869. The next prime is 2788249928987. The reversal of 2788249928960 is 698299428872.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15249404 + ... + 15431163.

It is an arithmetic number, because the mean of its divisors is an integer number (94066621488).

Almost surely, 22788249928960 is an apocalyptic number.

2788249928960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2788249928960 is an abundant number, since it is smaller than the sum of its proper divisors (3984546818176).

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

2788249928960 is an equidigital number, since it uses as much as digits as its factorization.

2788249928960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30680659 (or 30680645 counting only the distinct ones).

The product of its (nonzero) digits is 501645312, while the sum is 74.

The spelling of 2788249928960 in words is "two trillion, seven hundred eighty-eight billion, two hundred forty-nine million, nine hundred twenty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 71 80 128 142 160 256 284 320 355 568 640 710 1136 1280 1420 2272 2840 4544 5680 9088 11360 18176 22720 45440 90880 30680567 61361134 122722268 153402835 245444536 306805670 490889072 613611340 981778144 1227222680 1963556288 2178320257 2454445360 3927112576 4356640514 4908890720 7854225152 8713281028 9817781440 10891601285 17426562056 19635562880 21783202570 34853124112 39271125760 43566405140 69706248224 87132810280 139412496448 174265620560 278824992896 348531241120 557649985792 697062482240 1394124964480 2788249928960