20528472 has 32 divisors (see below), whose sum is σ = 52416000. Its totient is φ = 6696864.

The previous prime is 20528471. The next prime is 20528483. The reversal of 20528472 is 27482502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20528471) 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, 7972 + ... + 10227.

It is an arithmetic number, because the mean of its divisors is an integer number (1638000).

Almost surely, 2^20528472 is an apocalyptic number.

It is an amenable number.

20528472 is an abundant number, since it is smaller than the sum of its proper divisors (31887528).

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

20528472 is a wasteful number, since it uses less digits than its factorization.

20528472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18255 (or 18251 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 20528472 is about 4530.8356845068. The cubic root of 20528472 is about 273.8118302405.

The spelling of 20528472 in words is "twenty million, five hundred twenty-eight thousand, four hundred seventy-two".