11643020 has 24 divisors (see below), whose sum is σ = 24763200. Its totient is φ = 4597632.

The previous prime is 11642959. The next prime is 11643041. The reversal of 11643020 is 2034611.

It is a self number, because there is not a number n which added to its sum of digits gives 11643020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2105 + ... + 5264.

It is an arithmetic number, because the mean of its divisors is an integer number (1031800).

Almost surely, 2^11643020 is an apocalyptic number.

11643020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11643020 is an abundant number, since it is smaller than the sum of its proper divisors (13120180).

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

11643020 is a wasteful number, since it uses less digits than its factorization.

11643020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457 (or 7455 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 11643020 is about 3412.1869819809. The cubic root of 11643020 is about 226.6497344138.

Adding to 11643020 its reverse (2034611), we get a palindrome (13677631).

The spelling of 11643020 in words is "eleven million, six hundred forty-three thousand, twenty".