Search a number
-
+
28395996 = 22343113487
BaseRepresentation
bin110110001010…
…0100111011100
31222102122222120
41230110213130
524232132441
62452342540
7463235106
oct154244734
958378876
1028395996
1115035372
129614a50
135b62b85
143ab2576
15275d966
hex1b149dc

28395996 has 48 divisors (see below), whose sum is σ = 68538624. Its totient is φ = 9144576.

The previous prime is 28395989. The next prime is 28396019. The reversal of 28395996 is 69959382.

Its product of digits (1049760) is a multiple of the sum of its prime divisors (648).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58065 + ... + 58551.

It is an arithmetic number, because the mean of its divisors is an integer number (1427888).

Almost surely, 228395996 is an apocalyptic number.

It is an amenable number.

28395996 is an abundant number, since it is smaller than the sum of its proper divisors (40142628).

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

28395996 is a wasteful number, since it uses less digits than its factorization.

28395996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 648 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The square root of 28395996 is about 5328.7893559419. The cubic root of 28395996 is about 305.0837215297.

The spelling of 28395996 in words is "twenty-eight million, three hundred ninety-five thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 12 43 86 113 129 172 226 258 339 452 487 516 678 974 1356 1461 1948 2922 4859 5844 9718 14577 19436 20941 29154 41882 55031 58308 62823 83764 110062 125646 165093 220124 251292 330186 660372 2366333 4732666 7098999 9465332 14197998 28395996