20532004 has 6 divisors (see below), whose sum is σ = 35931014. Its totient is φ = 10266000.

The previous prime is 20531999. The next prime is 20532011. The reversal of 20532004 is 40023502.

It can be written as a sum of positive squares in only one way, i.e., 12110400 + 8421604 = 3480^2 + 2902^2 .

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 as a sum of consecutive naturals, namely, 2566497 + ... + 2566504.

Almost surely, 2^20532004 is an apocalyptic number.

It is an amenable number.

20532004 is a deficient number, since it is larger than the sum of its proper divisors (15399010).

20532004 is a wasteful number, since it uses less digits than its factorization.

20532004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133005 (or 5133003 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20532004 is about 4531.2254413128. The cubic root of 20532004 is about 273.8275327881.

Adding to 20532004 its reverse (40023502), we get a palindrome (60555506).

The spelling of 20532004 in words is "twenty million, five hundred thirty-two thousand, four".