20541004 has 24 divisors (see below), whose sum is σ = 39590208. Its totient is φ = 9247440.

The previous prime is 20540999. The next prime is 20541013. The reversal of 20541004 is 40014502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2527 + ... + 6889.

It is an arithmetic number, because the mean of its divisors is an integer number (1649592).

Almost surely, 2^20541004 is an apocalyptic number.

It is an amenable number.

20541004 is a deficient number, since it is larger than the sum of its proper divisors (19049204).

20541004 is a wasteful number, since it uses less digits than its factorization.

20541004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485 (or 4483 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20541004 is about 4532.2184413375. The cubic root of 20541004 is about 273.8675368032.

Adding to 20541004 its reverse (40014502), we get a palindrome (60555506).

It can be divided in two parts, 205 and 41004, that added together give a square (41209 = 203²).

The spelling of 20541004 in words is "twenty million, five hundred forty-one thousand, four".