11520407 has 6 divisors (see below), whose sum is σ = 12238248. Its totient is φ = 10842464.

The previous prime is 11520391. The next prime is 11520409. The reversal of 11520407 is 70402511.

It is not a de Polignac number, because 11520407 - 2⁴ = 11520391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19643 + ... + 20220.

It is an arithmetic number, because the mean of its divisors is an integer number (2039708).

Almost surely, 2^11520407 is an apocalyptic number.

11520407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11520407 is a deficient number, since it is larger than the sum of its proper divisors (717841).

11520407 is an equidigital number, since it uses as much as digits as its factorization.

11520407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39897 (or 39880 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 11520407 is about 3394.1725059284. The cubic root of 11520407 is about 225.8513066339.

Adding to 11520407 its reverse (70402511), we get a palindrome (81922918).

The spelling of 11520407 in words is "eleven million, five hundred twenty thousand, four hundred seven".