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20726030426880 = 28355397403757
BaseRepresentation
bin1001011011001101001111…
…01011100110001100000000
32201101101111200210121011010
410231212213223212030000
510204033402242130010
6112025223521520520
74236256232564532
oct455464753461400
981341450717133
1020726030426880
116670950938719
1223a8a157a3140
13b745c15b871c
145192066d7852
1525e1e9302620
hex12d9a7ae6300

20726030426880 has 72 divisors (see below), whose sum is σ = 66193759688112. Its totient is φ = 5526941446144.

The previous prime is 20726030426867. The next prime is 20726030426947. The reversal of 20726030426880 is 8862403062702.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698698039 + ... + 2698705718.

It is an arithmetic number, because the mean of its divisors is an integer number (919357773446).

Almost surely, 220726030426880 is an apocalyptic number.

20726030426880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20726030426880 is an abundant number, since it is smaller than the sum of its proper divisors (45467729261232).

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

20726030426880 is an equidigital number, since it uses as much as digits as its factorization.

20726030426880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397403781 (or 5397403767 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 20726030426880 in words is "twenty trillion, seven hundred twenty-six billion, thirty million, four hundred twenty-six thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 640 768 960 1280 1920 3840 5397403757 10794807514 16192211271 21589615028 26987018785 32384422542 43179230056 53974037570 64768845084 80961056355 86358460112 107948075140 129537690168 161922112710 172716920224 215896150280 259075380336 323844225420 345433840448 431792300560 518150760672 647688450840 690867680896 863584601120 1036301521344 1295376901680 1381735361792 1727169202240 2072603042688 2590753803360 3454338404480 4145206085376 5181507606720 6908676808960 10363015213440 20726030426880