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999996720 = 243515672659
BaseRepresentation
bin111011100110101…
…011110100110000
32120200200002121120
4323212223310300
54021444343340
6243121222240
733531555222
oct7346536460
92520602546
10999996720
11473521378
1223aa91980
1312c238848
1496b4a412
155cbd04d0
hex3b9abd30

999996720 has 80 divisors (see below), whose sum is σ = 3103134720. Its totient is φ = 266395392.

The previous prime is 999996709. The next prime is 999996727. The reversal of 999996720 is 27699999.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (999996727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374751 + ... + 377409.

It is an arithmetic number, because the mean of its divisors is an integer number (38789184).

Almost surely, 2999996720 is an apocalyptic number.

It is an amenable number.

999996720 is an abundant number, since it is smaller than the sum of its proper divisors (2103138000).

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

999996720 is a wasteful number, since it uses less digits than its factorization.

999996720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242 (or 4236 counting only the distinct ones).

The product of its (nonzero) digits is 4960116, while the sum is 60.

The square root of 999996720 is about 31622.7247402876. The cubic root of 999996720 is about 999.9989066655.

The spelling of 999996720 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 1567 2659 3134 4701 5318 6268 7835 7977 9402 10636 12536 13295 15670 15954 18804 21272 23505 25072 26590 31340 31908 37608 39885 42544 47010 53180 62680 63816 75216 79770 94020 106360 125360 127632 159540 188040 212720 319080 376080 638160 4166653 8333306 12499959 16666612 20833265 24999918 33333224 41666530 49999836 62499795 66666448 83333060 99999672 124999590 166666120 199999344 249999180 333332240 499998360 999996720