Search a number
-
+
199999772 = 22721020407
BaseRepresentation
bin10111110101111…
…00000100011100
3111221100001002222
423322330010130
5402144443042
631502404512
74645653500
oct1372740434
9457301088
10199999772
11a2992875
1256b90738
133258717b
141c7c2300
15128592d2
hexbebc11c

199999772 has 18 divisors (see below), whose sum is σ = 407142792. Its totient is φ = 85714104.

The previous prime is 199999769. The next prime is 199999777. The reversal of 199999772 is 277999991.

199999772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510008 + ... + 510399.

It is an arithmetic number, because the mean of its divisors is an integer number (22619044).

Almost surely, 2199999772 is an apocalyptic number.

It is an amenable number.

199999772 is an abundant number, since it is smaller than the sum of its proper divisors (207143020).

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

199999772 is a wasteful number, since it uses less digits than its factorization.

199999772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020425 (or 1020416 counting only the distinct ones).

The product of its digits is 5786802, while the sum is 62.

The square root of 199999772 is about 14142.1275627113. The cubic root of 199999772 is about 584.8033254171.

The spelling of 199999772 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, seven hundred seventy-two".

Divisors: 1 2 4 7 14 28 49 98 196 1020407 2040814 4081628 7142849 14285698 28571396 49999943 99999886 199999772