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11420 = 225571
BaseRepresentation
bin10110010011100
3120122222
42302130
5331140
6124512
745203
oct26234
916588
1011420
118642
126738
135276
14423a
1535b5
hex2c9c

11420 has 12 divisors (see below), whose sum is σ = 24024. Its totient is φ = 4560.

The previous prime is 11411. The next prime is 11423. The reversal of 11420 is 2411.

11420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 11398 and 11407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266 + ... + 305.

It is an arithmetic number, because the mean of its divisors is an integer number (2002).

211420 is an apocalyptic number.

11420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420 is an abundant number, since it is smaller than the sum of its proper divisors (12604).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12012).

11420 is a wasteful number, since it uses less digits than its factorization.

11420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 11420 is about 106.8644000591. The cubic root of 11420 is about 22.5193249611.

Adding to 11420 its reverse (2411), we get a palindrome (13831).

Subtracting from 11420 its reverse (2411), we obtain a palindrome (9009).

The spelling of 11420 in words is "eleven thousand, four hundred twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 571 1142 2284 2855 5710 11420