11520420 has 24 divisors (see below), whose sum is σ = 32257344. Its totient is φ = 3072096.

The previous prime is 11520419. The next prime is 11520433. The reversal of 11520420 is 2402511.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11520420.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95944 + ... + 96063.

It is an arithmetic number, because the mean of its divisors is an integer number (1344056).

Almost surely, 2^11520420 is an apocalyptic number.

11520420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11520420 is an abundant number, since it is smaller than the sum of its proper divisors (20736924).

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

11520420 is a wasteful number, since it uses less digits than its factorization.

11520420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192019 (or 192017 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 11520420 is about 3394.1744209749. The cubic root of 11520420 is about 225.8513915865.

Adding to 11520420 its reverse (2402511), we get a palindrome (13922931).

The spelling of 11520420 in words is "eleven million, five hundred twenty thousand, four hundred twenty".