11643420 has 24 divisors (see below), whose sum is σ = 32601744. Its totient is φ = 3104896.

The previous prime is 11643397. The next prime is 11643421. The reversal of 11643420 is 2434611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96969 + ... + 97088.

It is an arithmetic number, because the mean of its divisors is an integer number (1358406).

Almost surely, 2^11643420 is an apocalyptic number.

11643420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11643420 is an abundant number, since it is smaller than the sum of its proper divisors (20958324).

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

11643420 is a wasteful number, since it uses less digits than its factorization.

11643420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194069 (or 194067 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 11643420 is about 3412.2455949125. The cubic root of 11643420 is about 226.6523299275.

The spelling of 11643420 in words is "eleven million, six hundred forty-three thousand, four hundred twenty".