Search a number
-
+
199999928 = 23192635003
BaseRepresentation
bin10111110101111…
…00000110111000
3111221100001022202
423322330012320
5402144444203
631502405332
74645654112
oct1372740670
9457301282
10199999928
11a29929a7
1256b90848
133258726b
141c7c23b2
1512859388
hexbebc1b8

199999928 has 32 divisors (see below), whose sum is σ = 396316800. Its totient is φ = 94357728.

The previous prime is 199999903. The next prime is 199999931. The reversal of 199999928 is 829999991.

199999928 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37475 + ... + 42477.

It is an arithmetic number, because the mean of its divisors is an integer number (12384900).

Almost surely, 2199999928 is an apocalyptic number.

It is an amenable number.

199999928 is a deficient number, since it is larger than the sum of its proper divisors (196316872).

199999928 is a wasteful number, since it uses less digits than its factorization.

199999928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291 (or 5287 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 65.

The square root of 199999928 is about 14142.1330781463. The cubic root of 199999928 is about 584.8034774661.

The spelling of 199999928 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred twenty-eight".

Divisors: 1 2 4 8 19 38 76 152 263 526 1052 2104 4997 5003 9994 10006 19988 20012 39976 40024 95057 190114 380228 760456 1315789 2631578 5263156 10526312 24999991 49999982 99999964 199999928