11543620 has 48 divisors (see below), whose sum is σ = 26707968. Its totient is φ = 4156160.

The previous prime is 11543617. The next prime is 11543633. The reversal of 11543620 is 2634511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 11543591 and 11543600.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29949 + ... + 30331.

It is an arithmetic number, because the mean of its divisors is an integer number (556416).

Almost surely, 2^11543620 is an apocalyptic number.

11543620 is a gapful number since it is divisible by the number (10) 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 11543620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13353984).

11543620 is an abundant number, since it is smaller than the sum of its proper divisors (15164348).

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

11543620 is a wasteful number, since it uses less digits than its factorization.

11543620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 11543620 is about 3397.5903225669. The cubic root of 11543620 is about 226.0028976056.

It can be divided in two parts, 1154 and 3620, that added together give a palindrome (4774).

The spelling of 11543620 in words is "eleven million, five hundred forty-three thousand, six hundred twenty".