20013528 has 16 divisors (see below), whose sum is σ = 50033880. Its totient is φ = 6671168.

The previous prime is 20013523. The next prime is 20013529. The reversal of 20013528 is 82531002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416925 + ... + 416972.

Almost surely, 2^20013528 is an apocalyptic number.

It is an amenable number.

20013528 is an abundant number, since it is smaller than the sum of its proper divisors (30020352).

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

20013528 is a wasteful number, since it uses less digits than its factorization.

20013528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833906 (or 833902 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20013528 is about 4473.6481757063. The cubic root of 20013528 is about 271.5029489351.

The spelling of 20013528 in words is "twenty million, thirteen thousand, five hundred twenty-eight".