12528020 has 24 divisors (see below), whose sum is σ = 26629344. Its totient is φ = 4950176.

The previous prime is 12527987. The next prime is 12528037. The reversal of 12528020 is 2082521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12527983 and 12528001.

It is a congruent number.

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, 2114 + ... + 5433.

It is an arithmetic number, because the mean of its divisors is an integer number (1109556).

Almost surely, 2^12528020 is an apocalyptic number.

12528020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12528020 is an abundant number, since it is smaller than the sum of its proper divisors (14101324).

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

12528020 is a wasteful number, since it uses less digits than its factorization.

12528020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639 (or 7637 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 12528020 is about 3539.4943141641. The cubic root of 12528020 is about 232.2527220288.

The spelling of 12528020 in words is "twelve million, five hundred twenty-eight thousand, twenty".