20528841 has 8 divisors (see below), whose sum is σ = 27747040. Its totient is φ = 13498272.

The previous prime is 20528819. The next prime is 20528863. The reversal of 20528841 is 14882502.

It is an interprime number because it is at equal distance from previous prime (20528819) and next prime (20528863).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20528841 - 2⁶ = 20528777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20528799 and 20528808.

It is not an unprimeable number, because it can be changed into a prime (20528881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46651 + ... + 47088.

It is an arithmetic number, because the mean of its divisors is an integer number (3468380).

Almost surely, 2^20528841 is an apocalyptic number.

It is an amenable number.

20528841 is a deficient number, since it is larger than the sum of its proper divisors (7218199).

20528841 is an equidigital number, since it uses as much as digits as its factorization.

20528841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93815.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 20528841 is about 4530.8764052885. The cubic root of 20528841 is about 273.8134708231.

The spelling of 20528841 in words is "twenty million, five hundred twenty-eight thousand, eight hundred forty-one".