Search a number
-
+
20056480080 = 243572131271033
BaseRepresentation
bin10010101011011101…
…011001100101010000
31220202202210202100120
4102223131121211100
5312033424330310
613114103550240
71310006160600
oct225335314520
956682722316
1020056480080
1185623a637a
123a78a5b380
131b782c16c0
14d839c8c00
157c5bc5b70
hex4ab759950

20056480080 has 480 divisors, whose sum is σ = 78578970624. Its totient is φ = 4194312192.

The previous prime is 20056480063. The next prime is 20056480091. The reversal of 20056480080 is 8008465002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19415244 + ... + 19416276.

Almost surely, 220056480080 is an apocalyptic number.

20056480080 is a gapful number since it is divisible by the number (20) 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 20056480080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39289485312).

20056480080 is an abundant number, since it is smaller than the sum of its proper divisors (58522490544).

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

20056480080 is a wasteful number, since it uses less digits than its factorization.

20056480080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 20056480080 in words is "twenty billion, fifty-six million, four hundred eighty thousand, eighty".