11534220 has 72 divisors (see below), whose sum is σ = 35315280. Its totient is φ = 3047040.

The previous prime is 11534213. The next prime is 11534287. The reversal of 11534220 is 2243511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11534193 and 11534202.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24790 + ... + 25250.

It is an arithmetic number, because the mean of its divisors is an integer number (490490).

Almost surely, 2^11534220 is an apocalyptic number.

11534220 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 11534220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17657640).

11534220 is an abundant number, since it is smaller than the sum of its proper divisors (23781060).

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

11534220 is a wasteful number, since it uses less digits than its factorization.

11534220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 11534220 is about 3396.2067074900. The cubic root of 11534220 is about 225.9415360298.

Adding to 11534220 its reverse (2243511), we get a palindrome (13777731).

The spelling of 11534220 in words is "eleven million, five hundred thirty-four thousand, two hundred twenty".