Search a number
-
+
2980855808 = 214724779
BaseRepresentation
bin1011000110101100…
…0100000000000000
321200202000011102222
42301223010000000
522101044341213
61211442030212
7133603566500
oct26153040000
97622004388
102980855808
11129a6850a7
126b2348368
13386740808
14203c61a00
15126a61808
hexb1ac4000

2980855808 has 180 divisors, whose sum is σ = 7172040960. Its totient is φ = 1234501632.

The previous prime is 2980855807. The next prime is 2980855811. The reversal of 2980855808 is 8085580892.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2980855808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2980855807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37732313 + ... + 37732391.

It is an arithmetic number, because the mean of its divisors is an integer number (39844672).

Almost surely, 22980855808 is an apocalyptic number.

2980855808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2980855808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3586020480).

2980855808 is an abundant number, since it is smaller than the sum of its proper divisors (4191185152).

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

2980855808 is an frugal number, since it uses more digits than its factorization.

2980855808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 53.

The square root of 2980855808 is about 54597.2142879103. The cubic root of 2980855808 is about 1439.1751654836.

The spelling of 2980855808 in words is "two billion, nine hundred eighty million, eight hundred fifty-five thousand, eight hundred eight".