20541020 has 12 divisors (see below), whose sum is σ = 43136184. Its totient is φ = 8216400.

The previous prime is 20541013. The next prime is 20541023. The reversal of 20541020 is 2014502.

It is a junction number, because it is equal to n+sod(n) for n = 20540986 and 20541004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513506 + ... + 513545.

It is an arithmetic number, because the mean of its divisors is an integer number (3594682).

Almost surely, 2^20541020 is an apocalyptic number.

20541020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541020 is an abundant number, since it is smaller than the sum of its proper divisors (22595164).

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

20541020 is a wasteful number, since it uses less digits than its factorization.

20541020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027060 (or 1027058 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20541020 is about 4532.2202064772. The cubic root of 20541020 is about 273.8676079110.

Adding to 20541020 its reverse (2014502), we get a palindrome (22555522).

The spelling of 20541020 in words is "twenty million, five hundred forty-one thousand, twenty".