Search a number
-
+
7804221630 = 235260140721
BaseRepresentation
bin1110100010010101…
…01111100010111110
3202010220000112110120
413101022233202332
5111440340043010
63330223315410
7364252534512
oct72112574276
922126015416
107804221630
113345309247
12161974bb66
13974b0652a
145406a4142
1530a226e70
hex1d12af8be

7804221630 has 16 divisors (see below), whose sum is σ = 18730131984. Its totient is φ = 2081125760.

The previous prime is 7804221619. The next prime is 7804221647. The reversal of 7804221630 is 361224087.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7804221591 and 7804221600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130070331 + ... + 130070390.

It is an arithmetic number, because the mean of its divisors is an integer number (1170633249).

Almost surely, 27804221630 is an apocalyptic number.

7804221630 is an abundant number, since it is smaller than the sum of its proper divisors (10925910354).

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

7804221630 is a wasteful number, since it uses less digits than its factorization.

7804221630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260140731.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 7804221630 is about 88341.5057037178. The cubic root of 7804221630 is about 1983.5502089575.

The spelling of 7804221630 in words is "seven billion, eight hundred four million, two hundred twenty-one thousand, six hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 260140721 520281442 780422163 1300703605 1560844326 2601407210 3902110815 7804221630