20236528 has 80 divisors (see below), whose sum is σ = 45934560. Its totient is φ = 8552448.

The previous prime is 20236523. The next prime is 20236537. The reversal of 20236528 is 82563202.

It is a junction number, because it is equal to n+sod(n) for n = 20236496 and 20236505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20236523) 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 15 ways as a sum of consecutive naturals, for example, 208576 + ... + 208672.

It is an arithmetic number, because the mean of its divisors is an integer number (574182).

Almost surely, 2^20236528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20236528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22967280).

20236528 is an abundant number, since it is smaller than the sum of its proper divisors (25698032).

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

20236528 is a wasteful number, since it uses less digits than its factorization.

20236528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20236528 is about 4498.5028620642. The cubic root of 20236528 is about 272.5076304572.

The spelling of 20236528 in words is "twenty million, two hundred thirty-six thousand, five hundred twenty-eight".