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20801060 = 2257148579
BaseRepresentation
bin100111101011…
…0011000100100
31110010210200122
41033112120210
520311113220
62021501112
7341543330
oct117263044
943123618
1020801060
1110818165
126b71798
134403c27
142a967c0
151c5d425
hex13d6624

20801060 has 24 divisors (see below), whose sum is σ = 49922880. Its totient is φ = 7131744.

The previous prime is 20801059. The next prime is 20801071. The reversal of 20801060 is 6010802.

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, 74150 + ... + 74429.

It is an arithmetic number, because the mean of its divisors is an integer number (2080120).

Almost surely, 220801060 is an apocalyptic number.

20801060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20801060 is an abundant number, since it is smaller than the sum of its proper divisors (29121820).

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

20801060 is a wasteful number, since it uses less digits than its factorization.

20801060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148595 (or 148593 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 20801060 is about 4560.8179091036. The cubic root of 20801060 is about 275.0184450438.

Adding to 20801060 its reverse (6010802), we get a palindrome (26811862).

The spelling of 20801060 in words is "twenty million, eight hundred one thousand, sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 148579 297158 594316 742895 1040053 1485790 2080106 2971580 4160212 5200265 10400530 20801060