Search a number
-
+
213480384 = 2631331289
BaseRepresentation
bin11001011100101…
…11001111000000
3112212200221000220
430232113033000
5414122333014
633103343040
75201360535
oct1456271700
9485627026
10213480384
11aa55aa77
125b5b1a80
13352c7070
14204d0d8c
1513b1d6a9
hexcb973c0

213480384 has 168 divisors, whose sum is σ = 635599440. Its totient is φ = 62853120.

The previous prime is 213480383. The next prime is 213480389. The reversal of 213480384 is 483084312.

213480384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213480383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2398612 + ... + 2398700.

It is an arithmetic number, because the mean of its divisors is an integer number (3783330).

Almost surely, 2213480384 is an apocalyptic number.

213480384 is a gapful number since it is divisible by the number (24) 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 213480384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317799720).

213480384 is an abundant number, since it is smaller than the sum of its proper divisors (422119056).

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

213480384 is a wasteful number, since it uses less digits than its factorization.

213480384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 213480384 is about 14610.9679350822. The cubic root of 213480384 is about 597.6578916657.

The spelling of 213480384 in words is "two hundred thirteen million, four hundred eighty thousand, three hundred eighty-four".