20527520 has 96 divisors (see below), whose sum is σ = 53343360. Its totient is φ = 7418880.

The previous prime is 20527519. The next prime is 20527547. The reversal of 20527520 is 2572502.

It is an unprimeable number.

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, 147611 + ... + 147749.

It is an arithmetic number, because the mean of its divisors is an integer number (555660).

Almost surely, 2^20527520 is an apocalyptic number.

20527520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20527520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26671680).

20527520 is an abundant number, since it is smaller than the sum of its proper divisors (32815840).

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

20527520 is a wasteful number, since it uses less digits than its factorization.

20527520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20527520 is about 4530.7306254069. The cubic root of 20527520 is about 273.8075975356.

The spelling of 20527520 in words is "twenty million, five hundred twenty-seven thousand, five hundred twenty".