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6720690120 = 233556005751
BaseRepresentation
bin1100100001001010…
…11001011111001000
3122100101011102122220
412100211121133020
5102230444040440
63030515414040
7325354631514
oct62045313710
918311142586
106720690120
112939721a61
1213768b4320
138314a0721
1447a811144
152950458d0
hex1909597c8

6720690120 has 32 divisors (see below), whose sum is σ = 20162070720. Its totient is φ = 1792184000.

The previous prime is 6720690113. The next prime is 6720690131. The reversal of 6720690120 is 210960276.

It is a super-2 number, since 2×67206901202 = 90335351378131228800, which contains 22 as substring.

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, 28002756 + ... + 28002995.

It is an arithmetic number, because the mean of its divisors is an integer number (630064710).

Almost surely, 26720690120 is an apocalyptic number.

6720690120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6720690120 is an abundant number, since it is smaller than the sum of its proper divisors (13441380600).

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

6720690120 is a wasteful number, since it uses less digits than its factorization.

6720690120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56005765 (or 56005761 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 6720690120 is about 81979.8153206019. The cubic root of 6720690120 is about 1887.1421886251.

The spelling of 6720690120 in words is "six billion, seven hundred twenty million, six hundred ninety thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 56005751 112011502 168017253 224023004 280028755 336034506 448046008 560057510 672069012 840086265 1120115020 1344138024 1680172530 2240230040 3360345060 6720690120