Search a number
-
+
8128481208 = 233338686717
BaseRepresentation
bin1111001000111111…
…01100011110111000
3202222111011121222120
413210133230132320
5113121342344313
63422325321240
7405300643641
oct74437543670
922874147876
108128481208
1134a1352271
1216aa266220
139c70494c3
145717906c8
15328928d23
hex1e47ec7b8

8128481208 has 16 divisors (see below), whose sum is σ = 20321203080. Its totient is φ = 2709493728.

The previous prime is 8128481191. The next prime is 8128481233. The reversal of 8128481208 is 8021848218.

It is a self number, because there is not a number n which added to its sum of digits gives 8128481208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169343335 + ... + 169343382.

Almost surely, 28128481208 is an apocalyptic number.

It is an amenable number.

8128481208 is an abundant number, since it is smaller than the sum of its proper divisors (12192721872).

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

8128481208 is a wasteful number, since it uses less digits than its factorization.

8128481208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338686726 (or 338686722 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 42.

The square root of 8128481208 is about 90158.0900862479. The cubic root of 8128481208 is about 2010.6499558919.

The spelling of 8128481208 in words is "eight billion, one hundred twenty-eight million, four hundred eighty-one thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 24 338686717 677373434 1016060151 1354746868 2032120302 2709493736 4064240604 8128481208