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199127620 = 22516635987
BaseRepresentation
bin10111101111001…
…11001001000100
3111212200201202001
423313213021010
5401434040440
631431555044
74635361666
oct1367471104
9455621661
10199127620
11a244758a
125682ba84
13323401c3
141c636536
1512735b9a
hexbde7244

199127620 has 24 divisors (see below), whose sum is σ = 418489344. Its totient is φ = 79589856.

The previous prime is 199127569. The next prime is 199127633. The reversal of 199127620 is 26721991.

199127620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 199127620.

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, 30267 + ... + 36253.

It is an arithmetic number, because the mean of its divisors is an integer number (17437056).

Almost surely, 2199127620 is an apocalyptic number.

199127620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199127620 is an abundant number, since it is smaller than the sum of its proper divisors (219361724).

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

199127620 is a wasteful number, since it uses less digits than its factorization.

199127620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7659 (or 7657 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 199127620 is about 14111.2586256507. The cubic root of 199127620 is about 583.9520234873.

The spelling of 199127620 in words is "one hundred ninety-nine million, one hundred twenty-seven thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 1663 3326 5987 6652 8315 11974 16630 23948 29935 33260 59870 119740 9956381 19912762 39825524 49781905 99563810 199127620