Search a number
-
+
213441020 = 22513820927
BaseRepresentation
bin11001011100011…
…01100111111100
3112212121221000222
430232031213330
5414120103040
633102440512
75201135012
oct1456154774
9485557028
10213441020
11aa533441
125b593138
13352b2180
14204c08b2
1513b11bb5
hexcb8d9fc

213441020 has 24 divisors (see below), whose sum is σ = 482705664. Its totient is φ = 78808896.

The previous prime is 213440993. The next prime is 213441023. The reversal of 213441020 is 20144312.

It is a self number, because there is not a number n which added to its sum of digits gives 213441020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213441023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 410204 + ... + 410723.

It is an arithmetic number, because the mean of its divisors is an integer number (20112736).

Almost surely, 2213441020 is an apocalyptic number.

213441020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213441020 is an abundant number, since it is smaller than the sum of its proper divisors (269264644).

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

213441020 is a wasteful number, since it uses less digits than its factorization.

213441020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820949 (or 820947 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 213441020 is about 14609.6208027450. The cubic root of 213441020 is about 597.6211550329.

Adding to 213441020 its reverse (20144312), we get a palindrome (233585332).

The spelling of 213441020 in words is "two hundred thirteen million, four hundred forty-one thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 820927 1641854 3283708 4104635 8209270 10672051 16418540 21344102 42688204 53360255 106720510 213441020