Search a number
-
+
13330008820 = 225897488769
BaseRepresentation
bin11000110101000011…
…11100101011110100
31021101222202121110101
430122201330223310
5204244440240240
610042420203444
7651221130322
oct143241745364
937358677411
1013330008820
115720495a17
122700239584
1313458787ab
14906510d12
155303dc39a
hex31a87caf4

13330008820 has 24 divisors (see below), whose sum is σ = 28307550600. Its totient is φ = 5272092672.

The previous prime is 13330008793. The next prime is 13330008851. The reversal of 13330008820 is 2880003331.

It can be written as a sum of positive squares in 4 ways, for example, as 222964624 + 13107044196 = 14932^2 + 114486^2 .

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, 3742605 + ... + 3746164.

It is an arithmetic number, because the mean of its divisors is an integer number (1179481275).

Almost surely, 213330008820 is an apocalyptic number.

13330008820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13330008820 is an abundant number, since it is smaller than the sum of its proper divisors (14977541780).

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

13330008820 is a wasteful number, since it uses less digits than its factorization.

13330008820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7488867 (or 7488865 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 13330008820 in words is "thirteen billion, three hundred thirty million, eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 89 178 356 445 890 1780 7488769 14977538 29955076 37443845 74887690 149775380 666500441 1333000882 2666001764 3332502205 6665004410 13330008820