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199999974 = 2333333329
BaseRepresentation
bin10111110101111…
…00000111100110
3111221100001101110
423322330013212
5402144444344
631502405450
74645654206
oct1372740746
9457301343
10199999974
11a2992a39
1256b90886
13325872a5
141c7c2406
15128593b9
hexbebc1e6

199999974 has 8 divisors (see below), whose sum is σ = 399999960. Its totient is φ = 66666656.

The previous prime is 199999963. The next prime is 199999991. The reversal of 199999974 is 479999991.

It is a sphenic number, since it is the product of 3 distinct primes.

199999974 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16666659 + ... + 16666670.

It is an arithmetic number, because the mean of its divisors is an integer number (49999995).

Almost surely, 2199999974 is an apocalyptic number.

199999974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199999974 is a wasteful number, since it uses less digits than its factorization.

199999974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33333334.

The product of its digits is 14880348, while the sum is 66.

The square root of 199999974 is about 14142.1347044921. The cubic root of 199999974 is about 584.8035223011.

The spelling of 199999974 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 33333329 66666658 99999987 199999974