20504332 has 6 divisors (see below), whose sum is σ = 35882588. Its totient is φ = 10252164.

The previous prime is 20504221. The next prime is 20504353. The reversal of 20504332 is 23340502.

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 as a sum of consecutive naturals, namely, 2563038 + ... + 2563045.

Almost surely, 2^20504332 is an apocalyptic number.

It is an amenable number.

20504332 is a deficient number, since it is larger than the sum of its proper divisors (15378256).

20504332 is a wasteful number, since it uses less digits than its factorization.

20504332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126087 (or 5126085 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20504332 is about 4528.1709331694. The cubic root of 20504332 is about 273.7044604995.

Adding to 20504332 its reverse (23340502), we get a palindrome (43844834).

The spelling of 20504332 in words is "twenty million, five hundred four thousand, three hundred thirty-two".