12520089 has 24 divisors (see below), whose sum is σ = 19059040. Its totient is φ = 8211456.

The previous prime is 12520051. The next prime is 12520091. The reversal of 12520089 is 98002521.

It is not a de Polignac number, because 12520089 - 2⁷ = 12519961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520049) 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 23 ways as a sum of consecutive naturals, for example, 15897 + ... + 16665.

Almost surely, 2^12520089 is an apocalyptic number.

It is an amenable number.

12520089 is a deficient number, since it is larger than the sum of its proper divisors (6538951).

12520089 is an frugal number, since it uses more digits than its factorization.

12520089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 12520089 is about 3538.3737790120. The cubic root of 12520089 is about 232.2037016416.

The spelling of 12520089 in words is "twelve million, five hundred twenty thousand, eighty-nine".