11512420 has 48 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 4247936.

The previous prime is 11512399. The next prime is 11512427. The reversal of 11512420 is 2421511.

It is a junction number, because it is equal to n+sod(n) for n = 11512394 and 11512403.

It is not an unprimeable number, because it can be changed into a prime (11512427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12909 + ... + 13771.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^11512420 is an apocalyptic number.

11512420 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 11512420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13063680).

11512420 is an abundant number, since it is smaller than the sum of its proper divisors (14614940).

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

11512420 is a wasteful number, since it uses less digits than its factorization.

11512420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 11512420 is about 3392.9957264930. The cubic root of 11512420 is about 225.7991009720.

Adding to 11512420 its reverse (2421511), we get a palindrome (13933931).

Subtracting from 11512420 its reverse (2421511), we obtain a palindrome (9090909).

The spelling of 11512420 in words is "eleven million, five hundred twelve thousand, four hundred twenty".