11520447 has 16 divisors (see below), whose sum is σ = 16194048. Its totient is φ = 7270560.

The previous prime is 11520433. The next prime is 11520461. The reversal of 11520447 is 74402511.

It is an interprime number because it is at equal distance from previous prime (11520433) and next prime (11520461).

It is not a de Polignac number, because 11520447 - 2⁸ = 11520191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11525447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6297 + ... + 7917.

It is an arithmetic number, because the mean of its divisors is an integer number (1012128).

Almost surely, 2^11520447 is an apocalyptic number.

11520447 is a deficient number, since it is larger than the sum of its proper divisors (4673601).

11520447 is a wasteful number, since it uses less digits than its factorization.

11520447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 11520447 is about 3394.1783983757. The cubic root of 11520447 is about 225.8515680263.

Adding to 11520447 its reverse (74402511), we get a palindrome (85922958).

The spelling of 11520447 in words is "eleven million, five hundred twenty thousand, four hundred forty-seven".