20541406 has 16 divisors (see below), whose sum is σ = 33678720. Its totient is φ = 9354240.

The previous prime is 20541383. The next prime is 20541407. The reversal of 20541406 is 60414502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8691 + ... + 10798.

It is an arithmetic number, because the mean of its divisors is an integer number (2104920).

Almost surely, 2^20541406 is an apocalyptic number.

20541406 is a deficient number, since it is larger than the sum of its proper divisors (13137314).

20541406 is a wasteful number, since it uses less digits than its factorization.

20541406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19539.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20541406 is about 4532.2627902627. The cubic root of 20541406 is about 273.8693233765.

Adding to 20541406 its reverse (60414502), we get a palindrome (80955908).

The spelling of 20541406 in words is "twenty million, five hundred forty-one thousand, four hundred six".