11520389 has 8 divisors (see below), whose sum is σ = 11753280. Its totient is φ = 11289600.

The previous prime is 11520371. The next prime is 11520391. The reversal of 11520389 is 98302511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11520389 is a prime.

It is a super-2 number, since 2×11520389² = 265438725422642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520889) 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 7 ways as a sum of consecutive naturals, for example, 14597 + ... + 15365.

It is an arithmetic number, because the mean of its divisors is an integer number (1469160).

Almost surely, 2^11520389 is an apocalyptic number.

It is an amenable number.

11520389 is a deficient number, since it is larger than the sum of its proper divisors (232891).

11520389 is an equidigital number, since it uses as much as digits as its factorization.

11520389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 11520389 is about 3394.1698543237. The cubic root of 11520389 is about 225.8511890071.

The spelling of 11520389 in words is "eleven million, five hundred twenty thousand, three hundred eighty-nine".